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3 years ago

How is this not 6 I'm confused

Mathematics

2 answers:

trasher [3.6K]3 years ago

8 0

3 is being squared that is an exponet

so the times its self 2 times

3*3=9

so the problem would become:

5+9-7+1

jarptica [38.1K]3 years ago

5 0

Answer:

Your answer is 8

Step-by-step explanation:

Have you heard of PEMDAS?

P = Parenthesis

E = Exponent

M = Multiplication

D = Division

A = Addition

S = Subtraction

You do this in order from left to right. So...

5 + 3squared - 7 + 1 - First you do 3squared

5 + 9 - 7 + 1 - Now you add 5 and 9

14 - 7 + 1 - Subtract 14 and 7

7 + 1

= 8

Hope this helps! If so, Brainliest? :)

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Furkat [3]

Answer:

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3 years ago

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Graph the solution set for the inequality z-4≤3

OleMash [197]

Answer:

see below

Step-by-step explanation:

Add 4 to find the solution:

z ≤ 7

The value 7 is included in the solution set, so there will be a solid dot at that point. Numbers less than 7 are also included in the solution set, so the number line will be shaded to the left of that solid dot.

6 0

3 years ago

Please help on this problem

Harlamova29_29 [7]

Answer: EP is 12 and EO is about 10.91.

To find the length of EP, we can use the Pythagorean Theorem with the 2 legs of the right triangle it would form, EC and CP. CP would be 5 because it is the midpoint of the side.

5^2 + (EP)^2 = 13^2
EP = 12

Now, to find EO, we write and solve another Pythagorean Theorem equation using 12 for EP.

5^2 + (EO)^2 = 12^2
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6 0

3 years ago

Lea buys 6 model cars that each cost $15 she also buys 4 bottles of paint that each cost $11 how much does lea spends on model c

MissTica

Times the price of the model cars to the amount bought.

$15×6= 90.

Lea paid 90 dollars for the model cars.

Now, multiply the price of the paint to the amount bought.

$11×4= 44.

Lea paid 44 dollars for the paint.

Add both together. 90+44= 134.

Therefore, Lea paid $134 for the model cars and paint all together.

hope this helps!

8 0

3 years ago

You and your friend mix water and cirtic acid. You add 3 cups of citrtic acid for every 16 cups of water Your friend adds 2 cups

Vlad [161]

Answer:

A's mixture is more acidic.

Step-by-step explanation:

Given:

Two friends mix water and citric acid.

One (Let A) add 3 cups of citric acid for every 16 cups of water and another (Let B)adds 2 cups of citric acid for every 12 cups of water.

Now, we have to find that whose mixture is more acidic means:-

Solution:

A add 3 cups of citric acid for every 16 cups of water, the ratio = $\frac{3}{16}$

B adds 2 cups of citric acid for every 12 cups of water = $\frac{2}{12}$

Now, to find that who mix more citric acid in the mixture, firstly we will equalize the denominator of both fraction by taking LCM so that can be compare easily.

LCM of 16 and 12:- 48

16 - 16, 32, 48, 64, 80, 96....

12 - 12, 24, 36, 48, 60, 72.......

For friend A - $\frac{3\times3}{16\times3} =\frac{9}{48}$

For friend B - $\frac{2\times4}{12\times4} =\frac{8}{48}$

We found that in terms of 48 cups of water, friend A mixes 9 cups of acid while friend B mixes 8 cups of acid, means A is adding more acid than B and hence friend A's mixture is more acidic.

4 0

3 years ago