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hammer [34]
1 year ago
6

13. For a party, Bob's Pizza charges $12 for each

Mathematics
1 answer:
marusya05 [52]1 year ago
5 0

The number of pizzas you must order for the price to be the same is 5

<h3>How many pizzas must you order for the price to be the same?</h3>

Bob's Pizza charges = $12 for each supreme pizza

This can be represented as

y = 12x

For Mike's Pizzeria, we have

y = 8x + 20

Substitute y = 12x in y = 8x + 20

12x = 8x + 20

Evaluate the like terms

4x = 20

Divide by 4

x = 5

Hence, the number of pizzas you must order for the price to be the same is 5

Read more about equations at:

brainly.com/question/13763238

#SPJ1

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Answer:

28

Step-by-step explanation:

6.74 and 6.92 both round up to 7. Meaning the problem is basically 7 time 4.

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3 years ago
Please help! (giving brainliest)
emmasim [6.3K]

luca: 5\cdot \frac{1}{3}=\frac{5\cdot \:1}{3}  =\frac{5}{3} 1 remainder 2

bailey: 6\cdot \frac{4}{5}=\frac{6\cdot \:4}{5}  =\frac{24}{5} = 4 remainder 4

corin: 3\frac{1}{4}\cdot \:2\frac{1}{3}  =\frac{13}{4}\cdot \:2\frac{1}{3} =\frac{13}{4}\cdot \frac{7}{3} =\frac{13\cdot \:7}{4\cdot \:3} =\frac{91}{4\cdot \:3} =\frac{91}{12} =7\frac{7}{12}

sabra: 1\frac{4}{5}\cdot \frac{1}{2}  =\frac{9}{5}\cdot \frac{1}{2} =\frac{9\cdot \:1}{5\cdot \:2} =\frac{9}{5\cdot \:2} =\frac{9}{10}  0.9

<em></em>

<em>So D. is the right answer.</em>

<em></em>

<h3><em>Hope I helped you!</em></h3><h3><em>Success!</em></h3>

6 0
2 years ago
If 9+r=-4 what is r
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Answer:

r=-13

Step-by-step explanation:

9+r=-4

9-    -9

r=-13

4 0
3 years ago
Read 2 more answers
I will give brainliest if correct !!
Monica [59]

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c-11

Step-by-step explanation:

8 0
3 years ago
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Cube root(8+ 3 root 21)+ cube root (8-3 root 21)
krok68 [10]

Answer:

  • \sqrt[3]{8+3\sqrt{21} } + \sqrt[3]{8-3\sqrt{21} } = 1

Step-by-step explanation:

<h3>Given</h3>
  • \sqrt[3]{8+3\sqrt{21} } + \sqrt[3]{8-3\sqrt{21} }
<h3>To find </h3>
  • The value of the expression
<h3>Solution</h3>

<u>Let's rewrite the given as:</u>

  • <u />\sqrt[3]{3\sqrt{21} + 8} - \sqrt[3]{3\sqrt{21} - 8}

<u>Let the value is m and the expressions under 3rd roots are a and b, then we have </u>

  • a = 3√21 + 8, b = 3√21 - 8
  • m = ∛a - ∛b

<u>Cube the both sides:</u>

  • m³ = (∛a - ∛b)³
  • m³ = a - b - 3\sqrt[3]{a^2b} + 3\sqrt[3]{ab^2}

<u>Simplify in bits:</u>

  • a - b = 3√21 + 8 - 3√21 + 8 = 16
  • ab = (3√21 + 8)(3√21 - 8) = 9*21 - 64 = 125
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<u>So the expression becomes:</u>

  • m³ = 16 - 3\sqrt[3]{125a} + \sqrt[3]{125b}
  • m³ = 16 - 15∛a + 15∛b
  • m³ = 16 - 15(∛a - ∛b)
  • m³ = 16 - 15m

<u>Solve for m:</u>

  • m³ + 15m - 16 = 0
  • m³ - 1 + 15m - 15 = 0
  • (m - 1)(m² + m + 1) + 15(m - 1) = 0
  • (m - 1)(m² + m + 16) = 0
  • m - 1 = 0, m² + m + 16 = 0
  • m = 1 is the only real root, the quadratic equation has no real roots

The answer is 1

7 0
2 years ago
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