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Lorico [155]
3 years ago
10

Simplify -15.5/5. A −3.1 B 3.1 C −3.3 D 3.3

Mathematics
1 answer:
miskamm [114]3 years ago
6 0
The answer is C because a negative divided by positive is a negative
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Find the complement and the supplement of the given angle.<br> 23°
e-lub [12.9K]

Answer:

Complement: 67°

Supplement: 157°

Step-by-step explanation:

Complementary angles = 90°

90-23=67°

Supplementary angles = 180°

180-23=157°

7 0
3 years ago
Simplify.<br><br> 3(y+7)+8y<br><br><br> Please answere
Katena32 [7]
3y+21+8y
11y+21 is the answer
7 0
2 years ago
Read 2 more answers
3 feet
Furkat [3]

Answer: 12 for the main square

Step-by-step explanation:

take the 4 and the 3 and multiply it, makes 12. you see how each stair is 6 inches and there is 3 full steps which makes it 1.50 feet. 12 x 1.50 is 18. that makes your main square. I'm sorry but I cant really help you with the steps but that was also confusing to me.

3 0
2 years ago
A sign standing 6 feet tall is situated 18 feet away from a flag pole. at a certain time of day the sign's shadow is 3 feet long
alexdok [17]
Observe attached picture.

On picture we have:
A = height of flagpole = x ft
B = length of flagpole's shadow = 24 ft
C = height of sign = 6 ft
D = length of sign's shadow = 3 ft

When we draw a picture representing this problem we can also add another line marked in red. This way we can see that we have two right-angle triangles. We can see that both have same angle marked with α.

We can apply trigonometry rules to find height of flagpole.

From small triangle containing sign we can find tangens function:
tan \alpha = \frac{C}{D}
Similarly we can do for large triangle containing flagpole:
tan \alpha = \frac{A}{B}

We see that these two equations have same left sides. This means that their right sides must also be same:
\frac{C}{D} = \frac{A}{B}
We can solve for A:
CB=AD \\ A= \frac{CB}{D}  \\ A= \frac{6*24}{3}  \\ A=48 ft

Height of flagpole is 48 feet.

8 0
3 years ago
A crew you’re supervising is installing a circular patio. In order to purchase the materials, they need to compute the area. The
lawyer [7]

Answer:

it would be 37.69 square yards the answer that was given is off by .01

Step-by-step explanation:

you multiply 12 times pi (3.14) = 37.69

8 0
3 years ago
Read 2 more answers
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