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3 years ago

Identify the value of x that makes each pair of ratios equivalent. 2:x and 12:18

1 answer:

4 0

Alright, so in this you're going to want to set the ratios equal as follows:

2/12 = x/18
Therefore by cross-multiplying:
2*18 = 12x
36=12x
36/12=x
x=3

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Simplify: square root of 81+18<img src="https://tex.z-dn.net/?f=%5Csqrt%7B7%7D" id="TexFormula1" title="\sqrt{7}" alt="\sqrt{7}"

Lemur [1.5K]

$\sqrt{81 \: + \: 18 \sqrt{7} \: + \: 7}$

Factor the indicated expression:

$\sqrt{(9 \: + \: \sqrt{7} ) ^{2} }$

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$\boxed{ \bold{9 \: + \: \sqrt{7} }}$

<h3>MissSpanish </h3>

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2 years ago

7th grade math help. Check answers too please

seraphim [82]

Answer: It looks correct to me !

Step-by-step explanation:

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3 years ago

What is 0.012345679 as a fraction in simplest form

gavmur [86]

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3 years ago

2. Kelsea needs a test average of at least 90 to get an "A-" this marking period in math. Her three test grades

Luda [366]

Answer:

Equation: 87 + 91 + 86 + x = 360

Solution: 264 + x = 360

x = 360 - 264

x = 96

Step-by-step explanation:

1. Let's review the information given to us to answer the question correctly:

First three Kelsea's test grades : 87, 91 and 86

2. What score must she get on her fourth test to receive at least an A- ?

Define variable: x that represents the grade needed by Kelsea on her fourth test to receive at least an A-

Equation: 87 + 91 + 86 + x = 360

Solution: 264 + x = 360

x = 360 - 264

x = 96

Now you can understand if the previous work you did is correct

6 0

3 years ago

State the probability that justifies each statement. 11. If 2x+19=27, then 2x=8

Liono4ka [1.6K]

Answer:

100% true....

subtracting 19 from both sides brings you to 2x=8, so x=4

Step-by-step explanation:

8 0

3 years ago

Read 2 more answers