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4 years ago

Solve for c: 21+30=-4c+28

Mathematics

2 answers:

Olin [163]4 years ago

8 0

Answer: $-\frac{23}{4}$ or 5.75

Step-by-step explanation:

Step 1. Simplify 21 + 30 to 51

51 = −4c + 28

Step 2. Subtract 28 from both sides

51 - 28 = -4c

Step 3. Simplify 51 - 28 to 23

23 = -4c

Step 4. Divide both sides by -4

$-\frac{23}{4}$ = c

Step 5. Switch sides

c = $-\frac{23}{4}$

Decimal Form Answer: -5.75

I hope this helps you out.

earnstyle [38]4 years ago

7 0

Answer:

-23/4 =c

Step-by-step explanation:

21+30=-4c+28

Combine like terms

51 = -4c+28

Subtract 28 from each side

51 = -4c+28

Subtract 28 from each side

51-28 = -4c+28-28

23 = -4c

Divide each side by -4

23/-4 = -4c/-4

-23/4 =c

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48% of US adults have very little confidence in newspapers you randomly selected 10 US adults. Find the probability that the num

aivan3 [116]

Answer:

$P(x = 5) = 0.2441$

Step-by-step explanation:

Given

$p = 0.48$ --- proportion that have very little confidence

$n = 10$ --- sample

Required

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This question will be solved using binomial probability:

$P(x) = ^nC_xp^x(1-p)^{n-x}$

In this case: x = 5.

So, we have:

$P(x = 5) = ^{10}C_5*0.48^5(1-0.48)^{10-5}$

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3 years ago

Find the digit 6 in each of these numbers:

Daniel [21]

Answer:

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Step-by-step explanation:

The digit 6 in 364 is ten times greater than the 6 in 346.

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3 years ago

10 pens cost £6.50. Find the cost of 4 pens

Setler [38]

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3 years ago

1. Use the expression 10 x ? where? represents a factor between 1 and 9. What is true about the digit in the ones place of each

marishachu [46]

We want to study a general product, and find information about the ones place.

We will see that the ones place is always zero.

We have the expression:

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Let's give ? some different values and see what happens:

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etc...

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If you want to learn more, you can read:

brainly.com/question/16552177

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3 years ago

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tangare [24]

There's no picture up

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4 years ago

Solve for c: 21+30=-4c+28​

Solve for c: 21+30=-4c+28