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Dmitry_Shevchenko [17]
2 years ago
13

Grace and her brother need $400 to go to band camp. Their parents have agreed

Mathematics
1 answer:
Virty [35]2 years ago
6 0

Answer:

R. 25m + 10b = 400

Step-by-step explanation:

25m: $25 for time the mow the lawn

10b: $10 for every hour that they babysit their younger brother

400: They need $400 in total

+ : You need to add what they made for mowing the lawn and for babysitting.

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The distance between two locations, A and B is calculated using a third location C at a distance of 15 miles from
Rufina [12.5K]
<h3>Answer:  approximately 6.3 miles</h3>

=================================================

Explanation:

See the diagram below. The two given angles B = 105 and C = 20 are used to help find angle A

A+B+C = 180

A+105+20 = 180

A+125 = 180

A = 180-125

A = 55

Then we use the law of sines to find the side length c

sin(A)/a = sin(C)/c

sin(55)/15 = sin(20)/c

c*sin(55) = 15*sin(20) ... cross multiply

c = 15*sin(20)/sin(55)  .... divided both sides by sin(55)

c = 6.26294249724791 .... value is approximate

c = 6.3 ....... rounding to one decimal place

5 0
3 years ago
I need help with my math homework.
posledela

Answer:

a

Step-by-step explanation

2x=20

x =10

4 0
3 years ago
The elevation​ E, in​ meters, above sea level at which the boiling point of a certain liquid is t degrees Celsius is given by th
const2013 [10]
For T = 89.5 degrees C:
E(t) = 1100(90 - 89.5) + 520(90 - 89.5)^2= 1100(0.5) + 520(0.5)^2= 550 + 130= 680 m
For T = 90 degrees C:
E(t) = 1100(90 - 90) + 520(90 - 90)^2= 0 + 0= 0 m (meaning that boiling point is 90 degrees C at ground level)

3 0
3 years ago
Perimeter.<br> 6) A quadrilateral can have 2<br> reflex angles.
madreJ [45]

Answer:

False

Step-by-step explanation:

8 0
3 years ago
Read 2 more answers
3-5b=-32<br><br> Please help!
Inessa05 [86]

Answer:

b=7

Step-by-step explanation:

3-5b=-32

-5b=-32-3

-5b=-35

Divide both sides by -5

b=7

7 0
3 years ago
Read 2 more answers
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