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trasher [3.6K]
3 years ago
6

Help please this is hard

Mathematics
1 answer:
Schach [20]3 years ago
8 0

Answer:

m∠A = 120°

m∠C = 45°

Step-by-step explanation:

all triangle angles add up to 180

(12x + 12) + 15 + (3x +18) = 180

15x + 45 = 180

15x = 135

x = 9

m∠A = (12x + 12) = 12(9) + 12 = 120

m∠C = (3x +18) = 3(9) + 18 = 45

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One lap around the school track is 5/8 of a mile Carin ran 3 1/2 laps how far did she run
bearhunter [10]

Given length of a lap = 5/8 mile.

Number of laps Carin ran = 3 1/2 laps.

3 1/2 can be read as 3 and a half. In improper fractions, it can be written as

(3*2+1)/2 = 7/2 laps.

In order to find the total distance covered in 3 1/2 or 7/2 laps, we need to multiply length of a lap by total number of laps ran.

Therefore, total distance covered = 7/2 × 5/8.

=\frac{7}{2}\times\frac{5}{8}

Multiplying across, we get

= \frac{7\times5}{2\times8}

=\frac{35}{16}

Let us convert 35/16 into mixed fractions.

On dividing 35 by 16, we get 2 quotient and 3 remainder.

So, the mixed fraction would be 2 3/16.

Therefore, she ran 2 3/16 miles in 3 1/2 laps.


4 0
3 years ago
What is the product? 6.4(-3.7) -23.68 23.68 11.84 -20.48
djyliett [7]
Multiplying decimals:

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64 × 37 = 2368

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6.4 has one decimal place, and -3.7 has one decimal place.
Our result should have two decimal places. (1+1)

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Because we multiplied by a negative number, our result should be negative, too.

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6 0
3 years ago
GIVING OUT BRAINLIEST IF YOU ANSWER!!!
Elza [17]

Answer:

a

Step-by-step explanation:

3 0
3 years ago
Find the total price<br> of a $4.00 shirt<br> including the 7%<br> sales tax.
Leokris [45]
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3 years ago
The ratio of trumpet players to trombone players in the band is 5:3. What does this mean?
Anit [1.1K]

Answer:

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Step-by-step explanation:

example 6 trombone = 10 trumpet

5 0
3 years ago
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