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3 years ago

Which constant term should be used to complete the square? x^2-5x+__=7

1 answer:

7 0

The constant term should be (-5/2)^2 or (5/2)^2 or 25/4. This constant term comes from taking the coefficient on the x^1 term, halving it, and then squaring it.

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Please help me in this hurry

erma4kov [3.2K]

Answer:

450

Step-by-step explanation:

Area of the base: 1/2(5+7.5)(6)

1/2(75)= 37.5

Volume= Area of the base* height

37.5(12)= 450

5 0

3 years ago

I keep getting kicked off of Brainly when other tutors go to try and answer this question.

Ilya [14]

Answer

(C) 15

Explanation

The given equation that represents the number of bags of sand (x) and bags of mulch (y) that can be bought with $105 is

$3x+7y=105$

If no bags of sand are bought, therefore x = 0

Then the number of bags of mulch that can be bought with $105 will be

$\begin{gathered} 3(0)+7y=105 \\ \\ 0+7y=105 \\ \\ 7y=105 \\ \\ y=\frac{105}{7} \\ \\ y=15 \end{gathered}$

8 0

1 year ago

What is the measure of missing angle S?

Mashcka [7]

The answer for missing angle S is 60°

6 0

3 years ago

Read 2 more answers

2x³-8=0<br> How do I solve this problem ?

wlad13 [49]

Answer:

$x=2^{\frac{2}{3}}$

Step-by-step explanation:

1) Add 8 to both sides.

<em /> $2x^3=8$

2) Divide both sides by 2.

$x^3=\frac{8}{2}$

3) Simplify $\frac{8}{2}$ to 4.

$x^3=4$

4) Take the cube root of both sides.

$x=\sqrt[3]{4}$

5) Rewrite 4 as 2².

$x=\sqrt[3]{2^2}$

6) Use this rule: ${({x}^{a})}^{b}={x}^{ab}$ .

$x=2^{\frac{2}{3}}$

Decimal Form: 1.587401

__________________________________________

Check the answer:

$2x^3-8=0$

1) Let $x=2^\frac{2}{3}$ .

$2(2^{\frac{2}{3} })-8=0$

2) Use this rule: $(x^a)^b=x^{ab}$ .

$2\times2^{\frac{2\times3}{3} } -8=0$

3) Simplify 2 * 3 to 6.

$2\times2^{\frac{6}{3} } - 8 =0$

4) Simplify 6/3 to 2.

$2\times2^2-8=0$

5) Use Product Rule: $x^ax^b=x^{a+b}$ .

$2^3-8=0$

6) Simplify 2^3 to 8.

8 - 8 = 0

7) Simplify 8 - 8 to 0.

0 = 0

Thank you,

Eddie

5 0

1 year ago

You buy a storage case that holds 170 collectible die-cast cars. You have 137 die-cast cars. Write an inequality that describes

Murljashka [212]

Answer:

137 + x <= 170

Step-by-step explanation:

The following inequality will describe this scenario.

137 + x <= 170

the variable x in this scenario represents the total number of cars that you will purchase. This number is added to the number of toy cars that you already own which is 137. As long as this sum is less than or equal to 170 then your storage case will hold them.

4 0

3 years ago