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Tpy6a [65]
2 years ago
9

What is the value of x in the figure? A. 10 B. 6 C. 15 D. 12

Mathematics
1 answer:
Anuta_ua [19.1K]2 years ago
3 0

Answer:

Step-by-step explanation:

You need to set up a proportion.

(21 - 15) / 21  = 4/(x + 4)

6 / 21 = 4/(x + 4)

2/7 = 4/(x + 4)

2(x + 4) = 7*4

2x + 8 = 28

2x + 8-8= 28 - 8

2x = 20

x = 20/2

x = 10

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Francesca tried to evaluate an expression. Here is her work: 3(5)2–18÷3 = 3(25)–18÷3 = 75–18÷3 = 57÷3 = 19 Is Francesca's work c
hram777 [196]

Answer:

Nope. Moltiplication (and thus divisions) has to be done before any addition or subtractions, unless parenthesis indicate otherwise.

3(5)^2 - 18\div 3 = 3(25) - 6 = 75-6=69

5 0
2 years ago
A class of 28 students can complete 896 math problems in one day how many problems does each student complete
maksim [4K]

Answer:

<em>32</em>

Step-by-step explanation:

Assuming they all complete it at the same rate,

<u>896/28 = 32</u>

3 0
3 years ago
Find each percent of change. Round to the nearest whole percent if necessary. State whether the percent of change is an increase
Goryan [66]

Answer:

decrease

Step-by-step explanation:

5 0
2 years ago
Read 2 more answers
Pls help!!<br> 94 + 8r - 7
Fofino [41]

Answer:

87 + 8r

Step-by-step explanation:

We have a variable that we cannot simplify further:

8r

But we have two numbers that we can simplify:

94 - 7 = 87

Then we add those together:

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7 0
2 years ago
Read 2 more answers
8. Sven sells hamburgers at a ballpark. He earns $14.50/h, plus $0.50
Komok [63]

Answer:

Part A: $55.50

Part B: 52 hamburgers(sorry if I am wrong for part b but I think it is right)

Step-by-step explanation:

Part A:     $14.50 x 3= $43.50  +         24 x $0.50= $12=        

 ($ earned per hrs  x hrs worked)+  ($ per hamburger sold x times amount)

Hence $43.50 + $12= $55.50.

Part B:        $14.50 x 6.5 = $94.25                           $120 - $94.25= $25.75

 ($ earned per hrs  x hrs worked x x hrs worked)   ($ earned - $ earn from shif

 $25.75/0.50=51.5 (51.5 rounded to nearest burgers is 52 burgers)

Hence answer is 52 burgers.

Please rate Good and mark Brainliest

Thank You

5 0
3 years ago
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