Mathematics High School

factor completely;
3x^2+4x-7

Answers

Answer 1

Answer:

(3x-7) (x+1)

Step-by-step explanation:

3x^2 - 4x - 7

First split the middle term

3x^2 + 3x - 7x - 7

Make into two separate expressions

(3x^2 + 3x) (-7x-7)

Take out what you can

3x (x+1) -7 (x+1)

Now you have your answers

(3x-7) (x+1)

Related Questions

Listed below are body temperatures from five different subjects measured at 8 am and again at 12 am. find the values of d overbar and s subscript



d. in​ general, what does mu subscript d ​represent

Answers

Answer:

= −0.26

= 0.4219

Step-by-step explanation:

Given:

Sample1:  98.1  98.8  97.3  97.5  97.9

Sample2: 98.7  99.4  97.7  97.1  98.0

Sample 1           Sample 2              Difference d

98.1                        98.7                       -0.6  

98.8                       99.4                       -0.6

97.3                        97.7                       -0.4

97.5                        97.1                         0.4

97.9                        98.0                       -0.1

To find:

Find the values of  and

d overbar ( )  is the sample mean of the differences which is calculated by dividing the sum of all the values of difference d with the number of values i.e. n = 5

= ∑d/n

= (−0.6 −0.6 −0.4 +0.4 −0.1) / 5

= −1.3 / 5

= −0.26

s Subscript d is the sample standard deviation of the difference which is calculated as following:

= √∑( - )²/ n-1

=

√

   =  √ (−0.6 − (−0.26 ))² + (−0.6 − (−0.26))² + (−0.4 − (−0.26))² + (0.4 −  

                                                                    (−0.26))² + (−0.1 − (−0.26))² / 5−1

=  

=

=

= 0.4219

= 0.4219

Subscript d ​represent

μ represents the mean of differences in body temperatures measured at 8 AM and at 12 AM of population.

Step-by-step explanation:

Help me please ( only correct answers) ty

Answers

Answer:

135 cubic cm

Step-by-step explanation:

Split the shape into two so one is 7x3x5 and the other is 3x2x5. Multiply those then add together

Please check my answer !! thank you ⭐️

Answers

I think your answer is right.

HELPPPPP TYYY NO LINK OR ELSEWEE.. LOL

Answers

41.12 is the answer

so the perimeter is cirumference of circle + 16

25.12 + 16

41.12 is the perimeter

Janice bought an antique clock originally priced at $967 but on sale for 5% off. After 1% sales tax, what was the total cost?

Answers

Answer:

927.84

Step-by-step explanation:

The total cost of the antique clock that Janice bought is $927.82 approximately.

How to find the percentage from the total value?

Suppose the value of which a thing is expressed in percentage is "a'

Suppose the percent that considered thing is of "a" is b%

Then since percent shows per 100 (since cent means 100), thus we will first divide the whole part in 100 parts and then we multiply it with b so that we collect b items per 100 items(that is exactly what b per cent means).

Thus, that thing in number is

[tex]\dfrac{a}{100} \times b[/tex]

For this case, we have:

Original price of clock = $967Sale discount  = 5% on original price1% sales tax on the discounted price

Total cost = (discounted price of clock)'s price + sales tax of discounted price.

Let d = discounted price of the clock

Then, we have:

[tex]d = $967 - \text{5\% discount on 967} \\\\d = 967 - \dfrac{967}{100} \times 5 = \$918.65[/tex]

1% sales tax on 'd' will be: [tex]\dfrac{d}{100} \times 1 = \$9.1865 \approx \$9.19[/tex]

Thus, we get:

Total cost of the clock ≈ 918.65 + 9.19 = 927.82 (in dollars)

Thus, the total cost of the antique clock that Janice bought is $927.82 approximately.

Learn more about percent here:

https://brainly.com/question/11549320

ASAP, PLEASE ANSWER. WILL AWARD BRAINLIEST

Find the area of the shape

Answers

Answer:

54 unit^2.

Step-by-step explanation:

The area = the sum of the 2 triangles.

Area of a triangle = 1/2 * base * height.

So here:

A = 1/2 * 4 * 12 + 1/2 * 5 * 12

= 24 + 30

= 54

Answer:

ABCD = 54 u²

Explanation:

the area of the polygon = the area of the triangle ADC + the area of the triangle ABC

the area of a triangle = (height × base)/2

A ADC = (DE×AC)/2

A ADC = (4×12)/2

A ADC = 48/2

A ADC = 24 u²

A ABC = (BF×AC)/2

A ABC = (5×12)/2

A ABC = 60/2

A ABC = 30 u²

ABCD = A ADC + A ABC

ABCD = 24 + 30

ABCD = 54 u²

1)4/9 ÷ 2/3
2) 5/13 ÷ 7/6
3)13/15 ÷ 9/10
4) 5.2 x 8.5
5) 12.5 x 7.9
6) 0.3 x 11.2
7) 9 ÷ 4.5
8) 5.9 ÷ 0.54
9) 12.9 ÷ 46.5

Solve these question while showing your work.

Answers

1. 2/3. Flip 2/3 into 3/2 and then multiply and simplify.
2. 30/91. Flip 7/6 to 6/7 and then multiply. You cannot simplify the fraction.
3. 26/27. Flip 9/10 to 10/9 and then multiply. You cannot simplify the fraction.
4. 44.2. Multiply it as if there was no decimal. Then count the number of digits after the decimal in each factor. Then put the same number of digits behind the decimal in the product.
5. 98.75. Multiply it as if there was no decimal. Then count the number of digits after the decimal in each factor. Then put the same number of digits behind the decimal in the product.
6. 3.36. Multiply it as if there was no decimal. Then count the number of digits after the decimal in each factor. Then put the same number of digits behind the decimal in the product.
7. 2. Multiply the divisor by as many 10’s as necessary until you get a whole number. Remember to multiply the dividend by the same number of 10’s. Then divide it normally.
8. 10.93 (rounded). Multiply the divisor by as many 10’s as necessary until you get a whole number. Remember to multiply the dividend by the same number of 10’s. Then divide it normally. I rounded it to the hundredth.
Hope this helps!

Fran solved the equation 42 = x + 23. Although her final answer was correct, she could have found it in a simpler way. Which sentence best explains why? 23 should be added to the left side and 42 added to the right side. 23 should have been subtracted from, not added to, both sides of the equation. 42 should be subtracted from both sides. The variable must be moved to the left side of the equation.

Answers

Answer:

23 should have been subtracted from, not added to, both sides of the equation.

please help!!!!!

(find the volume)
how to solve this solid? please with explanation

Answers

Answer:

it's easy 464*574*7543*=Baba .ki

What is the least number of plums that can be shared equally among 6, 9 or 12 children?

Answers

Answer:

in order to find the least number of plums that can be shared, we have to find the greatest common factor of 6 ,9 and 12. the greatest common factor of 6 , 9 and 12 is 3. so if we have three plums. for 6 children , we have 3 plums.

Step-by-step explanation:

:)

Micheal is planning a graduation party at a restaurant the function hall cost $180 to rent and dinner costs $884. Write and solve an inequality to see how many friends Michael can invite.

PLS help me Pls

Answers

Answer:

no

Step-by-step explanation:

Which equation represents the relationship between s and t? A. s=1/7t B. s=7t C. s=t+2 D. s=t+18

Answers

Answer A

Step-by-step explanation: 2+2=22-55= -12-5= -7 then take away the negative then look outside and u should see a tree. Your final answer should be s=1/7t

Help please 34 points

Answers

Answer:

B is ans ..................

Answer:

B is the correct answer

Step-by-step explanation:

Please help and can you just type the answer because files don’t work please and thank you

Answers

Answer:

2.03

Step-by-step explanation:

HELP ASAP
Find a set of parametric equations for the rectangular equation.
t=7-x
y=1/x

a.x=7+t,y=1/(-t+7)
b.x=t-7,y=-1/(t+7)
c.x=7-t,y=-1/(t-7)
d.x=t-7,y=1/(t+7)
e.7+t,y=1/(t-7)

Answers

9514 1404 393

Answer:

  c.  x = 7-t; y = -1/(t -7)

Step-by-step explanation:

To find the parametric equation for x, use the equation for t and solve for x.

  t = 7-x

  x = 7 -t . . . . . . add x-t to both sides

__

To find the parametric equation for y, substitute the equation for x.

  y = 1/x

  y = 1/(7-t)

To make this match the available choices, we need to multiply numerator and denominator by -1.

  y = -1/(t -7)

The parametric equations are ...

  x = 7 -t; y = -1/(t -7) . . . . . . matches choice C

Answer: it is C

Step-by-step explanation:

PLZZZZZZZZZZZZ HELP !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

Answers

The new price is $138
120/100=x/15
x=18
15% of 120 is 18
120+18=138

PLEASE HELP!!!
!!!!!

Answers

Answer:

129°

Step-by-step explanation:

The angle with measure 51° and angle x are same-side exterior angles meaning that they are supplementary (sum equals 180°).

To find angle x, just subtract 51 from 180. :D

Someone help me out. So the question is Distance = Rate x Time What is the distance traveled if it took me 3 hours to travel at a rate of 60 miles per hour?

Answers

Answer: 180 miles

Step-by-step explanation:

From the question, we should note that the distance taken will be calculated by using the formula which will be:

Distance = Rate × Time

where,

Rate = 60 miles per hour

Time = 3 hours

Distance = 60 × 3

Distance = 180 miles

Therefore, the distance travelled is 180 miles.

help pls can u help me ​

Answers

Answer:

Inverse variation equation:

y = k/x

If y = 2, x = 9, find k:

9 = k/2k = 9*2k = 18

(a)

Equation of this function:

y = 18/x

(b)

x = 12, y = ?

y = 18/12y = 1.5

Stella bought 14 purses for $50. The next day she bought 2 more for a total of $38. What was the mean cost per purse?

Answers

Answer:

$48.5

Step-by-step explanation:

Given data

Number of purses= 14+2= 16

Cost of 14 purses= $50

Cost of 2 purses= $38

Let us use the weighted cost method

Mean cost = (14*50+ 2*38)/16

Mean cost = (700+ 76)/16

Mean cost = 776/16

Mean cost =$48.5

FGH, m∠G= 30° and m∠H= 100°. What is the measure of ∠F?

Answers

Answer:

∠F = 50°

Step-by-step explanation:

The sum of all three angles in a triangle = 180°

∠F = 180° - 30° - 100° = 50°

Fast!!!!
I’ll give brainiest

Answers

A. !!!!!!!!!!!!!!!!!!!!!!!!!!!!

Answer:

A) Collinear

Step-by-step explanation:

Points that are on the same line are called collinear points. A line is defined by two points and is written as shown below with an arrowhead. Two lines that meet in a point are called intersecting lines.

can you please find x and explain it to me thanks

Answers

Answer:

28

Step-by-step explanation:

I'm not sure but like this

(ADC)=16

(ACB)=12

16+2=(DCB)=28

Laney is 4 feet 8 inches tall. There are 2.54 centimeters in 1 inch. What is Laney’s height in centimeters

Answers

Solve

Given: 2.54cm = 1 inch

To find: 4 feet 8 inches in centimeters

If 1 inch is 2.45cm,

Divide 2.45 by 1

Then multiply it by 4.8

Final answer: 146.3cm in nearest tenth.

Can someone explain how to solve this

Answers

The answer is D. Here’s the explanation:
Take out the constants: 20/4 x a^(-4)b(-3)c^(2) / a^(2)b^(-6)c^(5)
Simplify the 20/4 to 5.
Use the Quotient Rule which is x^a / x^b = x^(a-b)
5a^(-4-2)b(-3+6)c(2-5)
Simplify (-4-2) to -6.
Simplify (-3+6) to 3.
Simplify (2-5) to -3.
You’re left with 5a^(-6)b^(3)c^(-3)
Use negative power rule which is x^(-a) = 1/x^(a)
5 x 1/a^(6)b^(3) x 1/c^(3)
Final Answer: 5b^(3)/a^(6)c^(3)

if y=5 x=9 find m and solve y=m+3x​

Answers

Answer: m = -22

Step-by-step explanation:

y=5

x=9

y=m+3x

5=m+3(9)

5=m+27

5-27=m

m=-22

Is 14 a solution for the equation -5 + 2x = 23? Explain.

Answers

Answer:

Yes because after solving the equation, x does indeed equal 14.

Step-by-step explanation:

-5 + 2x = 23

2x = 23 + 5

2x = 28

x = 14

Answer:

-5 + 2x= 23 x= 14 (Correct)

Step-by-step explanation:

This is true because the first step you take to sloving this equation is to move the constant to the right. Then calculate. Divide both sides and your answer should equal x=14!

question is in the photo

Answers

Answer:

AB = 2×2=4, 3×3=9, 4×4=16, 5×5=25

is the right answer

plz help PLEASE.........

Answers

Answer:

7x² + 11x - 18

Step-by-step explanation:

13x² - 8 + 11x - 6x² - 10

13x² - 6x² + 11x - 8 - 10

7x² + 11x - 18

Smart People Come Get Yall Juice...

Answers

Answer:.......................

Step-by-step explanation: where is the juice...?

We need help over here y’all
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