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dlinn [17]
4 years ago
13

Johnny and Dawn were in a Math competition.

Mathematics
1 answer:
lukranit [14]4 years ago
5 0
The answer is d . 10b^2-25b .
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1. General Trades A roofer earns $24 per hour plus $36 per hour overtime. If he puts in 40 hours of regular time during a certai
snow_tiger [21]

Answer:

He should work 6\frac{2}{3} hours in overtime.

Step-by-step explanation:

Let x represents the number of hours of regular time and y represents the number of hours of overtime,

Since, earnings are $24 per hour for regular time and $36 per hour for overtime,

Thus, total earning = (24x + 36y) dollars,

Here, x = 40 hours and total earning = $ 1200,

By substituting the values,

1200 = 24(40) + 36y

1200 = 960 + 36y

240 = 36y

⇒ y = 6\frac{2}{3}\text{ hours}

Hence, he should work 6\frac{2}{3} hours in overtime.

5 0
4 years ago
PLEASE HELP 50 POINTS
Nadya [2.5K]

Answer:

D

Step-by-step explanation:

if you look at the graph you can see that if you add 2 each tie to a problem it will not go left but right because right means the value is going up and left means the value is going down

3 0
3 years ago
If the endpoints of the diameter of a circle are (10, 12) and (0, 2), what is the standard form equation of the circle? A) (x +
attashe74 [19]
So the equation of a circle is (x - h)² + (y - k)² = r² where (h,k) are the coordinates of the center of the circle and r is the radius. The diameter of a circle is a line that goes from one point of the circle to the other through the center of the circle. Well the center would be midway through the diameter so use midpoint formula to find the center which is (h,k) Mid point formula is both given x's added together divided by 2 for h and both y coordinates added together divided by 2 to find k
(10+0)/2
10/2= 5
(12+2)/2
14/2 = 7
so the center of the circle is (5,7) now use distance formula using the center and one of the points to the radius
√((5-10)²+(7-12)²)
√(-5²+ -5²)
√(25 + 25)
√50 is the radius
Now plug all found information into circle equation
(x-5)² + (y-7)² =50      note the end is 50 because the circle equation is radius squared and since the radius is √50, radius² is 50.
Answer is c
8 0
4 years ago
Read 2 more answers
Solve 7x – 9 = 28 + 4(x – 1).
lidiya [134]
7x - 9 = 28 + 4x - 4
7x - 4x = 28 - 4 + 9
3x = 33
x = 11
7 0
4 years ago
Can u guys PLEASE do this question 1 only
joja [24]

Answer:

see explanation

Step-by-step explanation:

(a)

The shaded figure is a trapezium with area (A)

A = 0.5 h(a + b)

where h is the perpendicular height and a, b the parallel sides, thus

A = 0.5 × 10 × (8 + 14) = 5 × 22 = 110 cm²

(b)

The volume (V) of the prism is calculated as

V = area of end face × depth

  = 110 × 3 = 330 cm³

4 0
4 years ago
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