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raketka [301]
4 years ago
10

Sarah tried to evaluate 21 / 7 * 8 step by step.​

Mathematics
1 answer:
vladimir2022 [97]4 years ago
4 0

Answer:

24.

Step-by-step explanation:

First, use the Order of Operations:

PEMDAS.

First, divide, then multiply to get your solution.

21 / 7 = 3.

3 · 8 = 24.

Therefore, your answer is 24.

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Working 6 days, a worker earned<br> 150000 LL<br> a) How much will he earn by working 21<br> days?
Mila [183]

Answer:

525,000 LL

Step-by-step explanation:

6 x 3 = 18 (days)

150,000 x 3 = 450,000

21 - 18 = 3 so 6 * 2 = 3 ( 150,000 *(divide)  2 = 75,000)

so 450,000 + 75,000 = 525,000

7 0
3 years ago
AC=4, AE=7, AD=10, what is the length of AB? <br> A: 1 3/7 <br> B: 2 1/2<br> C: 5 5/7<br> D: 17 1/2
11Alexandr11 [23.1K]

Answer:

C. AB = 5\frac{5}{7}

Step-by-step explanation:

When two polygons are considered similar, the ratio of their corresponding sides would also be equal.

Since ∆ABC and ∆ADE are similar, \frac{AE}{AC} = \frac{AD}{AB}

\frac{7}{4} = \frac{10}{AB}

Cross multiply

7*AB = 10*4

7*AB = 40

Divide both sides by 7 to find AB

\frac{7*AB}{7} = \frac{40}{7}

AB = \frac{40}{7}

AB = 5\frac{5}{7}

6 0
3 years ago
Help Pls! It's for my Math 4! Scalar Multiplication!
prohojiy [21]

Answer:

Concept: Physics Qualitative Analysis.

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  1. Lets get started by setting up the equation
  2. They want us to find 3U-2V
  3. Given U= <6,6> V=<6,-6>
  4. Now we plug in and solve!
  5. 3<6,6>- 2<6,-6>
  6. <18,18>-<12,-12>
  7. Subtract
  8. <18-12,18-(-12)>
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8 0
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Mrac [35]

Answer:

Brenda

Step-by-step explanation:

You can divide the number of pages by the number of minutes to find the amount of minutes it takes to read 1 page. For Arnold, 3 pages / 7 minutes = 1 page per approximately 0.43 minutes. For Brenda, 8 pages / 14 minutes = 1 page per approximately 0.57 minutes. Brenda reads slightly faster since 0.57 > 0.43

8 0
3 years ago
1.35 x 8.8 please send a picture step by step I’m very confused thank you
Igoryamba

Answer:

Check out the image below!

Step-by-step explanation:

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3 years ago
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