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3 years ago

I NEED AN EXPERT ON SURFACE AREAS..Ill give extra points and brainless

Mathematics

2 answers:

natta225 [31]3 years ago

7 0

Answer:

60 is the area

Step-by-step explanation:

you just mult 12x5

notsponge [240]3 years ago

4 0

Answer:

105

Step-by-step explanation

15 x 12 = 180

180 divided by 2 = 90

90 + 15 = 105

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A man can drive a motorboat 70 miles down the Colorado River in the same amount of time that he can drive 40 miles upstream. Fin

pochemuha

The speed of the current is 40.34 mph approximately.

<u>SOLUTION: </u>

Given, a man can drive a motorboat 70 miles down the Colorado River in the same amount of time that he can drive 40 miles upstream.

We have to find the speed of the current if the speed of the boat is 11 mph in still water. Now, let the speed of river be a mph. Then, speed of boat in upstream will be a-11 mph and speed in downstream will be a+11 mph.

And, we know that, $\text{ distance } =\text{ speed }\times \text{ time }$

$\begin{array}{l}{\text { So, for upstream } \rightarrow 40=(a-11) \times \text { time taken } \rightarrow \text { time taken }=\frac{40}{a-11}} \\\\ {\text { And for downstream } \rightarrow 70=(a+11) \times \text { time taken } \rightarrow \text { time taken }=\frac{70}{a+11}}\end{array}$

We are given that, time taken for both are same. So $\frac{40}{a-11}=\frac{70}{a+11}$

$\begin{array}{l}{\rightarrow 40(a+11)=70(a-11)} \\\\ {\rightarrow 40 a+440=70 a-770} \\\\ {\rightarrow 70 a-40 a=770+440} \\\\ {\rightarrow 30 a=1210} \\\\ {\rightarrow a=40.33}\end{array}$

8 0

3 years ago

Lynnette wrote Randall a check for $368.91, and Randall deposited the check

Studentka2010 [4]

Answer: D. Only in the front of the check

Step-by-step explanation:

The one giving the check signs on the front. The one endorsing it and depositing it signs on the back.

7 0

3 years ago

Josephine noticed that out of 10 e-mails she received, 7 were advertisements. What can she predict about the number of advertise

andriy [413]

She can expect 70 to be ads since there is 10 times more emails so 7 times 10 is 70 so 70 ads

4 0

4 years ago

Read 2 more answers

Syd chooses two different primes, both of which are greater than $10,$ and multiplies them. The resulting product is less than $

Mars2501 [29]

Answer:

Step-by-step explanation:

There are 7 primes between 10 and 35: 11, 13, 17, 19, 23, 29, 31.

The product of 11 and any of the others will be less than 350, 6 products.

The product of 13 and any below 26 will be less than 350, 3 more products.

The product of 17 and any below 20 will be less than 350, 1 more product.

There are a total of 10 different products below 350 possible.

_____

11·13, 11·17, 11·19, 11·23, 11·29, 11·31, 13·17, 13·19, 13·23, 17·19

6 0

4 years ago

PLEASE ANSWER ASAP:

user100 [1]

Answer:

The expression: x + 3x + (3x-5)

Step-by-step explanation:

Okay, so x is the amount of $ spent. And three times means 3x, and 5 less on entertainment is 3x - 5. So put the expression together and you get x + 3x + (3x-5). Now plug in 10 for x so 10+3(10) + (3(10) -5).

B. $30

C. $25

D. $65

4 0

3 years ago

I NEED AN EXPERT ON SURFACE AREAS..Ill give extra points and brainless​

I NEED AN EXPERT ON SURFACE AREAS..Ill give extra points and brainless