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3 years ago

32-7 (6+12) divided by 4 to the power of 2. Brainliest

Mathematics

1 answer:

Leni [432]3 years ago

8 0

Answer:

Step-by-step explanation:

32 - 7(6+12) / 4^2

25 + 18 /4^2

43 / 16

2.6875 when you round it you get 2.7

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Alex scored 98,72, and 87 on his first three math test. What must he score on the next test to have an average of at least 86 (P

ss7ja [257]

Answer:

$\huge\boxed{\text{At least an } 87\%}$

Step-by-step explanation:

In order to find what score Alex must earn to have an average of 86 on all his tests, we need to first note what the formula to find the average of a data set is.

$\displaystyle \frac{x_1+x_2+...x_n}{n}$

What the formula means is that we have to add up all the values then divide by the total number of values.

Let's represent our unknown number as $x$ .

$\displaystyle \frac{98+72+87+x}{4} \geq 86$ (since we want AT LEAST an 86).

Let's solve this inequality for x.

$\frac{98+72+87+x}{4} \cdot 4 \geq 86 \cdot 4$
$98+72+87+x \geq 344$
$257 + x \geq 344$
$257 + x - 257 \geq 344 - 257$
$x \geq 87$

So, Alex must score at least an 87% on his next quiz to have an average of 86%.

Hope this helped!

8 0

3 years ago

4(3p+2)-5(6p-1)=2(p-8)-6(7p-4)

o-na [289]

So, The value of p is -5/22
Step-by-step explanation:
4(3p+2)-5(6p-1)=2(p-8)-6(7p-4)
12p+8-30p+5=2p-16-42p+24
-18p+13=-40p+8
-18p+40p=8-13
22p. =-5
p. =-5/22

8 0

3 years ago

Read 2 more answers

Whenever he visits Belleville, Andrew has to drive 15 miles due north from home. Whenever he visits Fairfax, he has to drive 8 m

Artemon [7]

Answer:

17 miles away

Step-by-step explanation:

if you draw, you get a right angle triangle.

use pythagorean theorem

c² = a²+b²

c² = 15² + 8²

c² = 225 + 64

c= sqrt(289)

c = 17

7 0

3 years ago

Write down the reciprocal of<br> 1/3

Leokris [45]

<h2><u>RECIPROCAL</u></h2>

<h3>ANSWER: </h3>

$\boxed{ \bold{3 \: \: \: or \: \: \: \frac{3}{1} }}$

<h3>EXPLANATION:</h3>

As we can see above, it's clear that 3 and 1/3 are reciprocals of each other.

And we can find the reciprocal of 1/3 by forming a fraction and to multiply the numerator and denominator by 3.

$\\ \large \tt \: \frac{1 \times 3}{ \frac{1}{3} \times 3 } = \bold{ \frac{3}{1} = 3} \\ \\$

Hence, 3/1 or 3 is the correct answer.

_______________∞_______________

6 0

2 years ago

Read 2 more answers

The y-intercept of the line whose equation is 3x - 2y = 6 is

Nimfa-mama [501]

Y-intercept happens when the x-coordinate equals zero

Subtitute x with 0 from the equation
<span>3x - 2y = 6
3(0) - 2y = 6
0 - 2y = 6
-2y = 6
y = 6/-2
y = -3

The y-intercept is -3</span>

3 0

3 years ago