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Over [174]
3 years ago
15

What is longer 2 feet of ribbon or 30 inches and why

Mathematics
2 answers:
Marina CMI [18]3 years ago
8 0
30 inches of ribbon because in one foot there are 12 inches so in 2 feet there are 24 inches. And 30 is greater than 24 so therefore 30 inches of ribbon is longer than 2 feet of ribbon
Nonamiya [84]3 years ago
3 0
Each foot is equal to twelve inches.
2*12=24
24 < 30
Thus, thirty inches of ribbon is longer than two feet of ribbon.
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3x-2y=-5 and 4x+2y=-16​
podryga [215]

Answer:

x=-22/4

y=-3

Step-by-step explanation:

3x-2y=-5

4x+2y=-16

we <u>add</u> the equation

7y=-21

y=-3

then we find the x by taking a random equation

I take 4x+2y=-16

4x+2(-3)=-16

4x-6=-16

4x=-22

x=-22/4

7 0
3 years ago
Suppose that a sample of size 100 is to be drawn from a population with standard deviation L0. a. What is the probability that t
NARA [144]

Answer:

The probability that the sample mean will lie within 2 values of μ is 0.9544.

Step-by-step explanation:

Here

  • the sample size is given as 100
  • the standard deviation is 10

The probability that the sample mean lies with 2 of the value of μ is given as

                                            P(| \bar{X}-\mu|

Here converting the values in z form gives

P(-2

Substituting values

P(-2

From z table

P(z\leq 2)=0.9772\\P(z\leq -2)=0.0228\\P(-2\leq z\leq 2)=P(z\leq 2)-P(z\leq -2)\\P(-2\leq z\leq 2)=0.9772-0.0228\\P(-2\leq z\leq 2)=0.9544\\

So the probability that the sample mean  will lie within 2 values of μ is 0.9544.

5 0
3 years ago
The cost of a fridge has increased by 15% to £828 <br> Work out the original price
Afina-wow [57]
Muliply .15 to 828 and get your answer the add it to 828

4 0
3 years ago
Read 2 more answers
57%:43% of 3.09 million
andrew-mc [135]

Answer:

Step-by-step explanation:

Percentage Calculator: What is 57 percent of 3.09? = 1.7613.

3 0
2 years ago
Solve each quadratic equation. Show your work 15. x2 + 3x = 10
OLEGan [10]
X² + 3x = 10

Convert to standard form.
x² + 3x - 10 = 0

factor x² = x * x
factor -10 = 5 * -2

(x + 5) (x - 2) = 0
x(x -2) + 5(x-2) = 0
x² - 2x + 5x - 10 = 0
x² + 3x - 10 = 0

x + 5 = 0               x² + 3x = 10
x = -5               -5² + 3(-5) = 10
                              25 - 15 = 10
                                     10 = 10

x - 2 = 0            x² + 3x = 10
x = 2               2² + 3(2) = 10
                             4 + 6 = 10
                                 10 = 10
4 0
3 years ago
Read 2 more answers
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