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3 years ago

I need help i dont understand

Mathematics

1 answer:

bogdanovich [222]3 years ago

3 0

B. the cost per ticket

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Susie has planned a trip to a city 60 miles away. She wishes to have an average speed of 60 miles/hour for the trip. Due to a tr

Nutka1998 [239]

Answer:

90 mi/h

Step-by-step explanation:

Given,

For first 30 miles, her speed is 30 miles per hour,

Let x be her speed in miles per hour for another 30 miles,

Since, here the distance are equal in each interval,

So, the average speed of the entire journey

$=\frac{\text{Average speed for first 30 miles + Average speed for another 30 miles}}{2}$

$=\frac{30+x}{2}$

According to the question,

$\frac{30+x}{2}=60$

$30+x=120$

$\implies x = 90$

Hence, she needs to go 90 miles per hour for remaining 30 miles.

7 0

3 years ago

A photo studio is going to display a portrait in their lobby. The portrait is being re-produced from a photo with dimensions 6in

Burka [1]

Answer:

the form of it will be the same

Step-by-step explanation:

the form will need to be the same or a part will be cropped so it fits the photo/portrait

6 0

3 years ago

How do I solve <img src="https://tex.z-dn.net/?f=%20%20%5Csin%28%20a%20%29%20%20%3D%20.8325" id="TexFormula1" title=" \sin(

Serga [27]

Answer:

$a=56.4\degree$

Step-by-step explanation:

Let $a$ be an acute angle.

To solve: $\sin(a)=0.8325$ , we take the sine inverse of both sides to obtain:

$\sin^{-1}(\sin(a))=\sin^{-1}(0.8325)$

Recall composition property of a function and its inverse function.

$f^{-1}(f(x))=x$

We apply this property to the left hand side to obtain;

$a=\sin^{-1}(0.8325)$

We now use our scientific calculator to obtain;

$a=56.3564115\degree$

We round to the nearest tenth to obtain;

$a=56.4\degree$

4 0

3 years ago

Hazel has band practice every other day and volunteers every seven days. if she had a band practice and volunteered on oct 23, w

LuckyWell [14K]

Cjdfb hjkbftbbui yuftg

3 0

3 years ago

Measure (7x+1) (2x+1)

Gemiola [76]

Smaller angle = 41°

Larger angle = 139°

Step-by-step explanation:

(7x - 1) + (2x + 1) = 180

7x + 2x - 1 + 1 = 180

9x = 180

x = 20

The measure of the smaller angle is

2x + 1

= 2(20) + 1

= 40 + 1

= 41°

The measure of the larger angle is

7x - 1

= 7(20) - 1

= 140 - 1

= 139°

4 0

3 years ago

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