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LiRa [457]
3 years ago
11

\sqrt{3} * 2\sqrt{3}" align="absmiddle" class="latex-formula">
Mathematics
2 answers:
Marysya12 [62]3 years ago
5 0

Answer: 24

Step-by-step explanation:

yanalaym [24]3 years ago
4 0

Answer:

12.89

Step-by-step explanation:

use a calculator

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Suppose PR = 54, solve for QR<br> 4x-1<br> 3x-1<br> P<br> R
Svet_ta [14]

Answer:

QR = 23

Step-by-step explanation:

P, A, and R are collinear.

PR = 54

PQ = 4x - 1

QR = 3x - 1

To solve for the numerical length of PR, let's generate an equation to find the value of x.

According to the segment addition postulate:

PQ + QR = PR

(4x - 1) + (3x - 1) = 54 (substitution)

Solve for x

4x - 1 + 3x - 1 = 54

Combine like terms

4x + 3x - 1 - 1 = 54

7x - 2 = 54

Add 2 to both sides

7x - 2 + 2 = 54 + 2

7x = 56

Divide both sides by 7

\frac{7x}{7} = \frac{56}{7}

x = 8

QR = 3x - 1

Plug in the value of x into the equation

QR = 3(8) - 1 = 24 - 1

QR = 23

5 0
3 years ago
Which expression is a difference of squares with a factor of 2x+5
Masteriza [31]

Answer:

4x^2 – 25

Step-by-step explanation:

i'vegot your back :))

4 0
2 years ago
A scientist mixes water (containing no salt) with a solution that contains 35% salt. She wants to obtain 105 ounces of a mixture
Naya [18.7K]

Answer:

60 oz of water to add

45 oz of 35% salt solution should be used

Step-by-step explanation:

Let x = amt no. ounces in the first solution

and  105 - x = amt no. of ounces in the second solution

Ist solution contains 0% salt

2nd solution contains .35(105 - x) salt

.15(105= amt of salt in mix

So.

amt of salt in 1st solution + amt of salt in 2nd solution = amt of salt in the mix

0 + .35(105 - x) = .15(105)

Let's get rid of the fractions by multipying thru the equation by 100

35(105 - x) = 15(105)

3675 - 35x = 1575

-35x = -2100

x = 60 oz of water to add

105 - 60 = 45 oz of 35% salt solution should be used

7 0
2 years ago
Can someone help me please
Furkat [3]

Answer:

answer for question 7. 0.17×70 = $11.9

8 0
2 years ago
Read 2 more answers
If p =-2 ,q= -1 and r=3 <br>find the value of . -<br>(1), p ²+ q²- r²​
sammy [17]

Answer:

Step-by-step explanation:

(-2)^{2} + (-1)^{2} - (3^{2} )\\4 + 1 -9\\-4

8 0
3 years ago
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