Grade 7 Unit 4 District Assessment 2020-21 Question: 1 Jacob saw a model of a building that will be built in his city. The model has a height of 40 centimeters and will be built to a scale of 1:50. What is the actual height of the building? (1 m = 100 cm)​

Answers

Answer 1

Answer:

123334

Step-by-step explanation:


Related Questions

Jarrod sports card holder can hold 9 cards on each page. How many pages will Jarrod need if he has 75 sport cards?​

Answers

Hello! Lets take a look.

To do this problem you would have to divide.

"75/9"

So what is the answer to that?

8!

divide 5 divided by 1/4 ​

Answers

Answer:

20

Step-by-step explanation:

Answer: 5 is made up of 5 times 1 of 5 ×4 = 20. A more mathematical way is to actually do this as a division problem of two fractions. 5 = 5 1. so divide 5 1 by 1 4. 5 1 1 4. This is a complex fraction make it simpler by multiplying both sides by the inverse of 1/4 which is 4/1.

Step-by-step explanation: Hope This Helps!!

From: Kageyama! <3 No need to thank me, it's what I do! ^^

What two properties of a Cepheid variable star do we need to know in order to calculate the approximate distance from Earth?

(choose two)

1.) luminosity

2.) parallax

3.) color

4.) heat intensity

5.) exact size

6.) apparent magnitude​

Answers

Answer:

4 and 6

Step-by-step explanation:

if 24 pencils cost $1.20 how much will 6 cost

Answers

Answer:

30 cents

Step-by-step explanation:

24=1.20

6=x

Algebra here to solve.

1.20=24

x=6

Divide by 4

1.20÷4=$0.3

$0.3=30 cents

Shane and Gemma share 35 sweetss in the ratio 1 : 4 Gemma eats 10 of her sweets and then gives Shane 1/2 of the sweets she has left. H ow many sweets does Shane have now?​

Answers

Answer:

14 sweets

Step-by-step explanation:

5x+35

x=7

7*4=28

(28-10)/2=7

7+7=14

is j + 8 = 72 a solution

Answers

j would need to equal 64

Solve the given system by substitution.

Answers

Answer:

(2, 8)

General Formulas and Concepts:

Pre-Algebra

Order of Operations: BPEMDAS

Brackets Parenthesis Exponents Multiplication Division Addition Subtraction Left to Right

Equality Properties

Algebra I

Solving systems of equations using substitution/elimination

Step-by-step explanation:

Step 1: Define Systems

r = 4s

r = 1/2s + 7

Step 2: Solve for s

Substitution

Substitute in r:                                4s = 1/2s + 7Subtract 1/2s on both sides:          7/2s = 7Divide 7/2 on both sides:              s = 2

Step 3: Solve for r

Define equation:                    r = 4sSubstitute in s:                       r = 4(2)Multiply:                                  r = 8

Answer:

s = 2

r = 8

Step-by-step explanation:

subsitution is were you plug in a systerm into the other problem

since they give you R = 4s you take 4s and plug it in were r is in the other equation (subsitution)

so now you have 4s = 1/2s+7

now you want to solve for s so your going to subtract 1/2s from both sides to cancle out the 1/2s --> 4s - 1/2s = 7 --> 3 and 1/2s = 7

now divide both sides by 3 1/2 to get s alone s = 7/3 and 1/2

s = 2

now we have s we take that and plug it into r = 4s

subsitute S as 2  --> r = 4(2)

r = 8

Please help I’ll mark brainliest!!

Answers

Step-by-step explanation:

4x-5≥7

4x≥7+5

4x≥12

x≥12/4

x≥3

•-------------------------------------------------------------->

__________________________________________________

0 1 2 3 4 5 6 7 8 9 10

hope it helps!

What is the difference (4x2 - 12x +6) and (10+ 3x – 2x?)?

Answers

the answer should be 2(2-3x)

explanation: factor and simplify the expression

The difference of the expression is 6x² - 15x - 4.

What is Expression?

Mathematical expressions consist of at least two numbers or variables, at least one arithmetic operation, and a statement. It's possible to multiply, divide, add, or subtract with this mathematical operation. An expression's structure is as follows:

(Number/variable, Math Operator, Number/variable) is an expression.

We have the Expression as

(4x² - 12x + 6) and (10 + 3x -2x²)

Now, simplifying the expression

= 4x² - 12x +6 - (10 + 3x -2x²)

= 4x² -12x+ 6 -10 -3x + 2x²

= 6x² - 15x - 4

Thus, the simplified expression is 6x² - 15x - 4.

Learn more about Expression here:

https://brainly.com/question/14083225

#SPJ2

What polygon has interior angle measures of 162°?

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Answer:

If you are given the measure of each interior angle (162 degrees) of a regular polygon. how many sides does the polygon have? If you look at a pentagon first where the interior angle is 108 deg then you see. The angle at the center is 180-162=18 deg and 360/18=20 so the polygon has 20 sides.

Convert 3 2/7 into improper fractions

21/7
23/7
41/7
None of the above

Answers

Hello,

The correct answer is B.

Further explanation: The first step is to multiply 3 by 7. That gives you 21, then add 21+2. Then put your denominator at the bottom.

Workspace:

3 * 7

=21

21 + 2

=23/7

can someone helpp!!! thanks

Answers

Answer:

he is going 10 mph and the equation is 1x = 10y

Karen has 10 cups of apple juice she uses 2/3 of it to make fruit punch
How many cups of apple juice did Karen put in the fruit punch? ASAP QUICKLY HELP! i will mark the brainiest whoever answers this question fast!

Answers

Answer:

3.33 or 3

Step-by-step explanation:

10 divided by 3 = 3.33 (it goes on) Or maybe you can't pour a third of a cup so maybe 3 or 4.

What is equivalent to 45/75?

Answers

The answer is 0.6

Hope that’s helps

Answer:

3/5

Step-by-step explanation:

15 / 5 = 3; 25/5 = 5 ; the answer is 3/5 or 0.6

which point lies on the point of the equation 9y-4x=18

Answers

Answer:

3-5 One line passes through the points (0, -4) and (-1 ... Write the equations in slope intercept form and then ... -2x = 9y-18? Dlugo a. ... Cy= - 4x + 13 Dy= 4r + 23.

Step-by-step explanation:

NOOOOOOOOOOOOOOOOOOOOOO  NEED

Answer:

(0, 2)

(9, 6)

Step-by-step explanation:

  slope intercept form y = mx + b:

      9y - 4x = 18        ===>       y = 4/9x + 2

              Pick any point for x to get y:

                   If x = 0, then y = 2    

                   If x = 9, then y = 6

above are just two of many but you should get the idea

If f(x)=3x-4, f(-2) =10 true or false

Answers

Answer:

False

Step-by-step explanation:

plug -2 in for x. 3(-3)-4=-10 and -10 isn't 10 so false.

(can I get brainliest please)

Answer:

False

Step-by-step explanation:

f(x) = 3x-4

f(-2) = ?

Substitute -2 for x in the given equation

f(-2) = 3(-2)-4

f(-2) = -6-4

f(-2) = -10

-10= 10

FALSE

Please help! I will give brainlyist!​

Answers

Answer:

I dont really know what it is id help but im confused

Step-by-step explanation:

Hector works 10 hours per week at a part-time job. His original pay rate was $8.50 per hour, but he recently received a raise of x dollars per hour. His new total weekly pay, y, is represented by the equation y = 10(8.5 + x). If Hector earned $100 last week, what was the amount of Hector's raise per hour? A . $12.00 B .$15.00 C. $1.50 D. $3.00

Answers

Answer:

$1.50

Step-by-step explanation:

Given the total weekly pay of Hector modeled by the equation;

y = 10(8.5 + x)

We are to find the amount of Hector's raise per hour x given the total oay y = $100

Substitute y = 100 into the equation and find x  as shown;

y = 10(8.5 + x)

100 = 10(8.5+x)

100/10 = 8.5 + x

10 = 8.5 + x

x = 10 - 8.5

x = 1.5

Hence the amount of Hector's raise per hour is $1.50

Carissa earns $450 per week for a 40 hour work week plus $16.83 per hour for each hour of overtime after 40 hours. Write an equation that would be used to determine her weekly wages where, W, is her wages and, V, is the number of overtime hours worked.

Answers

Answer:

The equation that determines Carissa's weekly wages is W = 450 + 16.83 × V

Step-by-step explanation:

The given parameters are

The amount Carissa earns per week  = $450

The amount Carissa earns for each overtime hour = $16.83

Where the given variables are;

W = Her weekly wages

V = The number of overtime hours worked

Therefore, the equation that would be used to determine her weekly wages is given as follows;

W = 450 + 16.83 × V.

Here are 5 lines on a coordinate grid:

Write equations for lines a,b,c,d and e


a:

b:

c:

d:

e:​

Answers

Answer/Step-by-step explanation:

✔️Equation for line a:

Line a is a vertical line, hence, the slope is undefined. Equation of a vertical line is given as x = k. Where k is the x-intercept and would remain the same irrespective of the corresponding y-coordinates of all the other points on the vertical line.

In line a, the x-intercept is -4. Therefore, the equation for line a would be:

✅ x = -4

✔️Equation for line b:

Line b is also a vertical line, and would be represented as x = k.

The value of k is the point olwhere the line intercepts the x-axis.

Thus, k = 4.

Equation for line b would be:

✅ x = 4

✔️Equation for line c:

Line c is an horizontal line. Slope (m) of a horizontal line is always 0.

It can be represented in slope-intercept form, y = mx + b, where,

m = slope = 0

b = y-intercept = 4 (this is where the y-axis is intercepted by the line)

Thus, substitute m = 0, b = 4 in y = mx + b.

The equation for line c would be:

y = (0)(x) + 4

✅y = 4

✔️Equation for line d:

Slope (m) = 0

y-intercept (b) = -2

Substitute m = 0, and b = -2 in y = mx + b

Equation for line d awould be:

y = -2

✔️Equation for line e:

Slope (m) = [tex] \frac{rise}{run} = -\frac{3}{4} [/tex]

y-intercept (b) = 1

Substitute m = -¾, and b = 1 in y = mx + b

Equation for line e would be:

✅y = -¾x + 1

4(m-1)=8(m+1)+12

step-by-step pls

Answers

To solve for m?
4(m-1)=8(m+1)+12
4m-4 = 8m+8+12
-8m+4 -8m+4
—————————-
-4m = 0+12+12
-4m/-4 = 24/-4
m = -6



At a store each notebook has a cost of
inequality?
dollars. Which situation can be represented by this
5x < 3x + 2
A The cost of 5 notebooks is greater than the cost of 3 notebooks plus a $2 pen.
B The cost of 5 notebooks is less than the cost of 3 notebooks with a $2-off coupon,
C The cost of 5 notebooks is less than the cost of 3 notebooks plus a $2 pen.
D The cost of 5 notebooks is $2 greater than the price of 3 notebooks.

Answers

Answer:

The answer is C.

Step-by-step explanation:

The < sign means that it will be less than so you can remove A and D. But it's not B either because of the $2 off coupon. Off means you would be subtracting meaning it'll look like this 5x < 3x - $2. So the correct answer is C.

Hope this helps!

The inequality is transformed into a sentence will be the cost of 5 notebooks is less than the cost of 3 notebooks plus a $2 pen. Then the correct option is C.

What is inequality?

Inequality is defined as an equation that does not contain an equal sign. Inequality is a term that describes a statement's relative size and can be used to compare these two claims.

The act of converting mathematical equations into a specified statement is known as equation-to-sentence transformation.

The inequality is given below.

5x < 3x + 2

The inequality is transformed into a sentence will be the cost of 5 notebooks is less than the cost of 3 notebooks plus a $2 pen. Then the correct option is C.

More about the inequality link is given below.

https://brainly.com/question/19491153

#SPJ5

b) 5z - 1
when z = 6
2

Answers

Answer:

309

Step-by-step explanation:

5z-1, z=62

5(62)-1

310 - 1

309

Please answer correctly !!!!!!!!!!!!! Will mark Brianliest !!!!!!!!!!!!!!!!

Answers

Answer:

4:3

Step-by-step explanation:

16:12=8:6=4:3

Answer:

4:3

Step-by-step explanation:

16 and 12 can both be divided by 4

16/4 = 4 12/4 = 3

so your simplified ratio is 4:3

HELP ME PLS IM HELLA DUMB

Answers

ur not dumb!!! i graphed the line for u here. i suggest watching some khan academy videos for extra practice!

HELP PLEASEEE
If ABCD is a parallelogram, identify the two pairs of congruent segments.

Answers

The pairs of congruent segments are

Line AB is congruent to Line DC
Line AD is congruent to Line BC

In other words, the answer is D.

*please be serious*
*solve for y*

Answers

Answer:

i cant answer it without x or at least some more stuff in the question, the only thing i can rlly say is 9x+2 maybe

Step-by-step explanation:

*will give brainliest*
While solving an equation, if the variable term becomes zero, and the equation makes a true statement, then the solution is (no solution, one solution, infinite solutions).

Answers

The answer is one solution I think

If the simple interest on ​$3000 for 7 years is ​840$​, then what is the interest​ rate?

Answers

Answer:

Step-by-step explanation:

4%

$5,000 is invested in two different accounts yielding 2% and 2.5% interest. The interest earned on the two accounts is $120. How much money was invested at 2% interest?

$1,000
$3,000
$4,000
$5,000

Answers

Answer:

1000

Step-by-step explanation:

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