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3 years ago

Can someone HELP me please

Mathematics

1 answer:

Fynjy0 [20]3 years ago

4 0

Answer:

I'm gonna give the steps. you can calculate

Step-by-step explanation:

a squared + b squared = c squared

15 squared + b squared = 17 squared

then find the value of b squared

225 + b squared = 289

subtract 225 on both sides

b squared = 64

b = 8

I'm not very sure but I hope you get the idea

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A snowmobile traveled 32 miles in 2 1/3 hours.

sergey [27]

Answer:

13.7 mph

Step-by-step explanation:

d = st

Given:

d = 32 miles
t = 2 1/3 hr = 7/3 hr

Find the rate s:

s = d/t
s = 32÷7/3 = 32 × 3/7 = 96/7 ≈ 13.7 mph (rounded)

4 0

3 years ago

Solve this system of equations: 5x + y = 7 20x + 2 = y

xz_007 [3.2K]

Answer:

x = 1/5, y = 6

Step-by-step explanation:

5x + y = 7

y = 7 - 5x

Set equations equal to each other to eliminate y

7 - 5x = 20x + 2

7 = 25x + 2

5 = 25x

x = 1/5

y = 7 - 5(1/5)

y = 7 - 1

y = 6

7 0

3 years ago

A shipment of 11 printers contains 2 that are defective. Find the probability that a sample of size 2, drawn from the 11, will

svet-max [94.6K]

The required probability is $\frac{36}{55}$

Solution:

Given, a shipment of 11 printers contains 2 that are defective.

We have to find the probability that a sample of size 2, drawn from the 11, will not contain a defective printer.

Now, we know that, $\text { probability }=\frac{\text { favourable outcomes }}{\text { total outcomes }}$

Probability for first draw to be non-defective $=\frac{11-2}{11}=\frac{9}{11}$

(total printers = 11; total defective printers = 2)

Probability for second draw to be non defective $=\frac{10-2}{10}=\frac{8}{10}=\frac{4}{5}$

(printers after first slot = 10; total defective printers = 2)

Then, total probability $=\frac{9}{11} \times \frac{4}{5}=\frac{36}{55}$

7 0

4 years ago

(Look at Screenshot)

Mkey [24]

Yes it’s school p just mind the mean

8 0

4 years ago

Books are packed into boxes of 90. 23 boxes on 1 crate. How many crates will be needed to pack 270000 books.

agasfer [191]

Answer:

130 crates

Step-by-step explanation:

270,000/90=3000/23

3000/23=130.43

rounded: 130 crates

6 0

3 years ago