3 years ago

I will mark your answer brainliest.

Mathematics

1 answer:

Juli2301 [7.4K]3 years ago

3 0

Answer:

Step-by-step explanation:

12÷4=3

7÷7=1

3+1=4

therefore she spent 4 dollars

You might be interested in

Marti roll two dice. What is the probability that the sum of the dice is 7, given that the first die is showing a 2

mixas84 [53]

Showing 2 can help and it

5 0

3 years ago

Read 2 more answers

Use an angle sum identity to derive each double-angle identity.

Simora [160]

$\ [cos(2\theta)]'=(2cos^2\theta-1)'=2(cos^2\theta)'-(1)'\\\\=2\cdot2cos\theta\cdot(-sin\theta)-0=-2\cdot2sin\theta cos\theta=\boxed{-2sin2\theta}\\\\Used:\\\ [f(x)-g(x)]'=f'(x)-g'(x)\\\{f[g(x)]\}'=f'[g(x)]\cdot g'(x)\\(cosx)'=-sinx\\sin2x=2sinxcosx$

4 0

3 years ago

Madeline has used 50 sheets of a roll of paper towels, which is 5/8 of the entire roll. The equation 5/8s = 50 can be used to fi

raketka [301]

Answer:

s=80

Step-by-step explanation:

5/8ths is .625

80 x .625 =50

4 0

3 years ago

Sam scored 43 48 and 42 points on 3 test how many points should he get on the fourth test to get in average score of 50

antoniya [11.8K]

43+48+42=133

(133+x)/4=50
133+x=200
x=67

5 0

3 years ago

maricela bought 2 1/3 pounds of bananas , 1 5/12 pounds of apples , and 3 5/6 pounds of mangoes. How many pounds of fruit did sh

damaskus [11]

Answer:

7 7/12 pounds of fruit

Step-by-step explanation:

First, add all of the whole numbers

2 + 1 + 3= 6 (save for later)

then find a common denominator between the fractions which is 12

1/3 = 4/12

5/6 = 10/12

4/12 + 10/12 + 5/12 = 19/12 or 1 7/12

now, add 1 7/12 + 6 to get you 7 7/12

hope this helps

6 0

3 years ago