Mathematics High School

What is the value of x in the equation
3x - 4y = 65:
when y=4?
Ox=13 1 / 2
x=21 1 / 3
X =23
O
x=27

Answers

Answer 1
x=27 because you plug y into the equation and solve for x

Related Questions

Kaitlin runs 6 miles in 50 minutes at the same rate how many miles would she run in 35 minutes

Answers

Answer:

4.2 miles

Step-by-step explanation:

6/50=.12

.12*35=4.2 miles

1. X/5 + 6 <2*
A.X> 20
B.X-20
C.x<-20
D.x<20

Answers

Answer:

C. x←-20

Step-by-step explanation:

2-6=-4-4•5=-20

Solve: sqrt(x+9) = x-3

Answers

The answer is (x-3) = 2 lol

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[tex] \sqrt{x + 9} = x - 3[/tex]

Sides gets power 2

[tex] ({ \sqrt{x + 9} })^{2} = ( {x - 3})^{2} [/tex]

[tex] |x + 9| = {x}^{2} - 6x + 9 [/tex]

_________________________________

[tex]x + 9 = {x}^{2} - 6x + 9[/tex]

Subtract sides 9

[tex]x + 9 - 9 = {x}^{2} - 6x + 9 - 9[/tex]

[tex]x = {x}^{2} - 6x[/tex]

Subtract sides x

[tex]x - x = {x}^{2} - 6x - x[/tex]

[tex] {x}^{2} - 7x = 0[/tex]

[tex]x(x - 7) = 0[/tex]

[tex]x = 0[/tex]

OR

[tex]x - 7 = 0[/tex]

[tex] x = 7[/tex]

_________________________________

[tex]x + 9 = - ( {x}^{2} - 6x + 9)[/tex]

[tex]x + 9 = - {x}^{2} + 6x - 9[/tex]

Subtract sides 9

[tex]x + 9 - 9 = - {x}^{2} + 6x - 9 - 9 \\ [/tex]

[tex]x = - {x}^{2} + 6x - 18 [/tex]

Subtract sides x

[tex]x - x = - {x}^{2} + 6x - 18 - x [/tex]

[tex] - {x}^{2} + 5x - 18 = 0[/tex]

Multiply sides by -1

[tex] {x}^{2} - 5x + 18 = 0 [/tex]

[tex]x = No \: \: solution[/tex]

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CHECK the roots :

[tex]x = 0[/tex]

[tex] \sqrt{0 + 9} ≠0 - 3[/tex]

[tex] \sqrt{9} ≠ - 3[/tex]

[tex]3≠ - 3[/tex]

Thus (( x = 0 )) is unacceptable.

+++++++++++++++++++++++++++++++++++++++

[tex]x = 7[/tex]

[tex] \sqrt{7 + 9} = 7 - 3[/tex]

[tex] \sqrt{16} = 4[/tex]

[tex]4 = 4[/tex]

Thus (( x = 7 )) is the only solution for x.

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Done...

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Here are two similar rectangles.
4 cm
4.8 cm
7 cm
Work out the area of the larger rectangle.

Answers

Answer:

[tex]40.32cm^{2}[/tex]

Step-by-step explanation

4*1.2=4.8

7*1.2=8.4

8.4*4.8=40.32

A rectangle is a two-dimensional shape where the length and width are different.

The length and width of the larger rectangle are 4.8 cm and 8.4 cm.

The area of the larger rectangle is 40.32 cm².

What is a rectangle?

A rectangle is a two-dimensional shape where the length and width are different.

The area of a rectangle is given as:

Area = Length x width

We have,

Two similar rectangles:

Smaller rectangles:

Length = 4 cm

Width = 7 cm

Larger rectangles:

Length = 4.8 cm

We need to find the width of the larger rectangle.

Since the two rectangles are similar.

4 cm = 4.8 cm

Multiply 7/4 on both sides.

7/4 x 4cm = 7/4 x 4.8 cm

7 cm = 8.4 cm

Now,

Larger rectangle:

Length = 4.8 cm

Width = 8.4 cm

Now,

The area of the larger rectangle:

Area = Length x width

Area = 4.8 x 8.4

Area = 40.32 cm²

Thus,

The area of the larger rectangle is 40.32 cm².

Learn more about rectangles here:

https://brainly.com/question/15019502

#SPJ5

someone please help me ASAP

Answers

Answer:

Step-by-step explanation:

1. 9.6x10^4

2. 7.2x10^8

3. 1.19x10^-7

4. 9.48x10^-3

5. 2.04x10^8

what is the distance between the points (0,-1) and (8,7)

Answers

[tex]Distance=\sqrt{(x_{2}-x_{1})^2(y_{2}-y_{1} )^2} \\\\\sqrt{(8-0)^2(7-(-1) )^2}\\\\\sqrt{8^2+8^2} \\\\\sqrt{64+64}\\\\ \sqrt{128} =8\sqrt{2} \\\\[/tex]

Answer:

11.3

Step-by-step explanation:

11.3

How can you use powers and exponents to express known quantities

Answers

The most common ways is to indicate orders of magnitude through multiplying by powers of 10. I expect you’re at least seen something like 6.022∗1023

show up in your texts. The important part for this discussion is 1023

, because it gives us an idea of just how large this value is. If we wrote it all out, it would be: 602,200,000,000,000,000,000,000. You can do the same thing in the other direction, too. 10−28
Common value for certain types of physics, but a very, very small one.

Alternately, when dealing with probability, the function for determining the probability of series of independent events with the same odds is

where p is the probability of a certain outcome and n is the number of times the event occurs. For example, if we want to know what the odds of getting five heads in a row while flipping a coin we’re looking at 125
or 132

But the thing with powers of 10 is the most common I’ve seen, it even occasionally gets named Scientific Notation.

What is 1/100 of 1.9 ?

Answers

Answer:

0.019

Step-by-step explanation:

1/100 = 1%

Do 1% of 1.9

and you get =

0.019

Hope this helps! <3

Answer:

0.019

Step-by-step explanation:

1/100=0.01

0.01×1.9=0.019

Answer these question for brainlist and 5 stars

Answers

Answer:

3. Em dash

4. En dash

Step-by-step explanation:

3y-9x=21
standard to slope intercept simplified

Answers

Answer:

y=3x+7  I think

hope this helps!

Answer:

[tex]y=3x+7[/tex]

Step-by-step explanation:

[tex]y=mx+b[/tex]

[tex]3y=9x+21[/tex]

[tex]\frac{3y}{3}=\frac{9x}{3} +\frac{21}{3}[/tex]

[tex]y=3x+7[/tex]

HELPPPP!!!
The LCM of 50, 120, and 225 is 5.


True or False

Answers

False, the LCM of 50, 120 and 225 is 1800.

5 is the GCF of 50 120 and 225, not the LCM.

Hope it helps!

Answer:

The answer is False

Step-by-step explanation:

5 is the smallest number that can fit into all 3 numbers.

How much time will Alex need to walk to his school, which is 2 1/4 miles away from his house, if he would walk with the speed of

4 1/2 mph

Answers

It would take him 30 mins

which polynomial function has zeros when x= -2, 3/4, 5

Answers

Answer: f(x)=(x+2)(4x-3)(x-5)

Step-by-step explanation:

Alg2.2.5 practice 2

Polynomial function has zeros when  x=[tex]-2, \frac{3}{4} , 5[/tex] is

[tex]4x^3-15x^2-31x+30[/tex]

Given :

polynomial function has zeros when x= -2, 3/4, 5

Lets write the zeros in factor form

If 'a' is a zero , then factor is (x-a)

The given zeros are [tex]-2, \frac{3}{4} , 5[/tex]

lets write all the three zeros in factor form

[tex](x-(-2)) (x-\frac{3}{4})(x-5)\\(x+2)(4x-3)(x-5)[/tex]

Now multiply the parenthesis to get the polynomial

[tex]\left(x+2\right)\left(4x-3\right)\left(x-5\right)\\\left(4x^2+5x-6\right)\left(x-5\right)\\4x^2x+4x^2\left(-5\right)+5xx+5x\left(-5\right)-6x-6\left(-5\right)\\combine \; like \; terms\\4x^3-15x^2-31x+30[/tex]

polynomial function has zeros when x= -2, 3/4, 5 is

[tex]4x^3-15x^2-31x+30[/tex]

Learn more : https://brainly.com/question/21970844

What is the slope of the line shown below?
A. -2/3
B.-3/2
C. 3/2
D. 2/3

Answers

Answer:

-2/3

Step-by-step explanation:

If g(x)=
x+1
and h(x) = 4 – x, what is the value of (9.0) (-3)?

Answers

Answer:it’s b

Step-by-step explanation:

On edn

select a pair of numbers that have a sum of 9 and a difference of 1

Answers

Answer:

The two numbers with the sum of 9 and difference of 1 is 5 and 4.

Step-by-step explanation:

Answer:

The answer is 4 and 5.

Step-by-step explanation:

4+5 = 9

5-4 = 1

MARK ME BRAINLIEST!!

HELP ASAP SOS!!!
QUESTION : write a 4 step proof that triangle ABD is congruent to ABD

Answers

Here are a few reasons:

The triangles have the same three sides

The triangles have the same three angles

The triangles could perfect overlap one another

They have corresponding angles.

Not sure if this helped but I hope so!

Determine,se existir,a inversa da matriz abaixo:
A= (1 2)
(1 3)

Answers

Answer:

which principle prevents a brach from abusing  its power

Step-by-step explanation:

On a school trip, a class travels 22 kilometers by train and 9.36 kilometers by bus. How far did the class travel?

Answers

Answer:

Just add

Step-by-step explanation:

22 + 9.36 = ?

22 + 9.36 = 31.36

So, they traveled 31.36 kilometers.

The class traveled 31.36 kilometers

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Answers

Answer: Explain it better please.

Step-by-step explanation:

the answer is -9, -2.2

(-4,-5) (36,11)

divide

36 / -4

and

11 / -5

=

-9, -2.2

The midpoint is (16, 3) you can find this by using the midpoint formula - (x1+x2)/2 , (y1+y2)/2 -4+36 = 32/2 = 16 which is the X, then -5+11= 6/2 = 3 :)

4х – Зу = 15
x - 2y = 0 solve using substitution please show work

Answers

Answer:

(6,3)

Step-by-step explanation:

I'm going to start with the second one.

x - 2y = 0

   +2y  +2y

x = 0 + 2y   which is the same as (x = 2y)

Now plug that in for the x-value in the other equation.

4(2y) - 3y = 15

8y - 3y = 15

5y = 15

Divide both sides by 5

y = 3

Here is where you are going to plug it back into the first one we did.

x - 2(3) = 0

x - 6 = 0

  +6   +6

x = 6

So the answer is (6,3)

Hope that helps and have a great day!

I need help in solving this problem. I need it to be factored by the GCF. I know the answer is (x-3)(5x-1), but I need the work.
5x^2-16x+3
I also have 2x^2+7x+5 and the answer to it is (2x+5)(x+1), but I also need to work too.

Answers

Answer:

Step-by-step explanation:

There are 10 marbles in a bag 1/5 are red and the others are blue. What is the ratio of red to blue marbles?

Answers

Answer:

1:4 ratio

Step-by-step explanation:

The Answer is a 1:4 ratio because 1/5 of 10 is 2 and 4/5 of 10 is 8 so the ratio would look like 2:8. You would then simplify 2:8 to 1:4.

Ratio of red to blue marbles is 1:5

An equation is used to show the relationship between two or more numbers and variables.

10 marbles in a bag 1/5 are red and the others are blue.

number of red marbles = 1/5 * 10 = 2

number of blue marbles = 10 - 2 = 8

Ratio of red to blue marbles is 2:8 = 1:5

Find out more on equation at:https://brainly.com/question/24868934

Please help I've been staring at this thing for 30 minutes it says I have to match the segments with its measure I don't understand what goes where :(

Answers

Answer:

I believe AC=63, BG=28, GC=38, And AE=70. So really just like how it's listed in order. If you need further Help, please let me know!

Step-by-step explanation:

Lea wrote a number riddle. Her clues were:

9 is 10 times the value of the 9 in 329,513
2 is 110 the value of the 2 in 7,562
6 is 110 the value of the 6 in 4.68
Which number is an answer to Lea's riddle?

Answers

Answer:

498,173.26

Step-by-step explanation:

please help! thank you!

Answers

Answer:

I believe the answer is c not a hundred percent sure

The Tucker family had a meal catered for wedding anniversary dinner. Th cost of the dinner was $489 they had a coupon for 10% off and there was a 5% sales tax what was the total cost including the discount and sales tax nearest cent

Answers

Answer:415.65

Step-by-step explanation:

Answer:

415.65

Step-by-step explanation:

trust me

A rectangle has side lengths of 2x - 1 and x + 1. If the rectangle's area is 90 square inches, what is its perimeter?

Answers

Answer:

39

Step-by-step explanation:

x=6.5

2(6.5)-1=12

6.5+1=7.5

12+12+7.5+7.5=39

Select whether each value for x will make the inequality below a True or False statement. x + 2 > 5.8

3 True or False
6 True or False
7.1 True or False
5/3 True or False
19/5 True or False
45/7 True or False

Answers

Answer:

Pretty Sure It's, B, C, F, H

Step-by-step explanation:

Because, If you put each in decimal form and compare it with 5.8, just find out the bigger number and BOOM, you got ya answer!

Answer:

B C F H

Step-by-step explanation:

hope this helps can i please have brainliest that would be great

Triangle ADB is congruent to triangle ? Please HELP!!

Answers

Answer:

CBD

Step-by-step explanation:

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