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3 years ago

Josie's last four test scores in math were 82 89 92 87. what score on her next test will give her an average of 89 or above

1 answer:

8 0

Take the 89 times 5 tests. You get 445 total score you need for an average of 89. Add 82, 89, 92, 87=350 445-350=95 They must get a 95 on next test to get the average of 89

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Find the length of the base of a square pyramid if the volume is 128 cubic inches and has a height of 6 inches

Len [333]

Answer: a = 8

Step-by-step explanation:

Volume of a square based pyramid is given as

$\frac{a^{2}h }{3}$ .

where a is the length of the side and h is the height.

Substituting into the formula , we have

V = $\frac{a^{2}h }{3}$

128 = $a^{2}h$ /3

384= $a^{2}$ X 6

Divide through by 6

384/6 = $a^{2}$

64 = $a^{2}$

Therefore :

a = $\sqrt{\frac{64}{1} }$

a = 8

6 0

4 years ago

Use the drop-down menus to choose steps in order to correctly solve<br> 4k−6=−2k−16−2 for k.

RoseWind [281]

From figure 1: -

From figure 2: 12

From figure 3: 6

From figure 4: -12

From figure 5: -2

Step-by-step explanation:

We need to solve the equation $4k-6=-2k-16-2$ for k.

Solving:

$4k-6=-2k-16-2\\4k-6=-2k-18\\4k=-2k-18+6\\4k=-2k-12\\4k+2k=-12\\6k=-12\\k=\frac{-12}{6}\\k=-2$

So, the options to be selected are:

From figure 1: -

From figure 2: 12

From figure 3: 6

From figure 4: -12

From figure 5: -2

Keywords: Solving equations

Learn more about Solving equations at:

#learnwithBrainly

7 0

3 years ago

. Twice a number decreased by eight. if the number N, the expression is

tester [92]

Answer:

2n-8

Step-by-step explanation:

twice n is 2n. decreased by 8 is the -8

5 0

3 years ago

From the chapter Rational Numberssome body please answer fast

Alexxx [7]

Answer:

- $\frac{3}{7}$

Step-by-step explanation:

Given

- $\frac{42}{98}$ ← divide numerator/ denominator by 14 )

= - $\frac{3}{7}$

7 0

3 years ago

Six over ten >_______> one over two

Vinvika [58]

Six over ten over one over two is 0.3

5 0

4 years ago