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3 years ago

Im not sure how to solve, please help

Mathematics

1 answer:

grin007 [14]3 years ago

8 0

34) (t-4)+(-4t+1)

Answer: -3t-3

36) 3(x^3-3x^2)+2

Answer: 3x^3-9x^2+2

38) (3x-1)(x^3-2-2x)

Answer: 3x^4-x^3-6x^2-4x+2

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Penny's garden has alength of 16ft. and the width is 5 ft. with a rectangular fountain in the middle that measures 5 ft by 9 ft.

lilavasa [31]

First we need the whole garden:

16 x 5 = 80

Now we need to fountain:

5 x 9 = 45

Now to find our answer:

80 - 45 = 35

So our answer is B. 35ft²

4 0

3 years ago

Help me with this question please.

Tems11 [23]

Answer:

38.6 m

Step-by-step explanation:

cos 75° = 10/x

x= 10/cos75°= 38.637 ≈ 38.6m

8 0

3 years ago

16.4.57 Question Help A box contains eighteen $1 bills, ten $5 bills, eight $10 bills, three $20 bills, and one $100 bill You bl

Rudiy27

Answer:

$ 7.7

Step-by-step explanation:

Given,

There are 18 $1 bills, ten $5 bills, eight $10 bills, three $20 bills, and one $100 bill,

Total number of bills = 18 + 10 + 8 + 3 + 1 = 40,

$\because \text{Probability}=\frac{\text{Favourable outcomes}}{\text{Total outcomes}}$

Thus,

The probability of $ 1 = $\frac{18}{40}$

The probability of $ 5 = $\frac{10}{40}$

The probability of $ 10 = $\frac{8}{40}$

The probability of $ 20 = $\frac{3}{40}$

The probability of $ 100 = $\frac{1}{40}$

If a bill is selected randomly,

The expected value of the bill

$=\frac{18}{40}\times 1+\frac{10}{40}\times 5+\frac{8}{40}\times 10+\frac{3}{40}\times 20+\frac{1}{40}\times 100$

$=\frac{18+50+80+60+100}{40}$

$=\frac{308}{40}$

= $ 7.7

5 0

3 years ago

Danielle built a ramp with a stopping block at the bottom for her scout troop’s pinewood derby. She wants to paint the top and s

Anvisha [2.4K]

A correct, all number of sides are calculated correctly

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3 years ago

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Molly and Tess like to shop at the mall. Molly has $280 in her bank account and spends $40 every trip

Kobotan [32]

8 times. $280 divided by 40

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3 years ago