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3 years ago

[(b+3)÷(a–2)](−4) if a=−5, b=6.

Mathematics

1 answer:

finlep [7]3 years ago

6 0

9/-7 x -4=

36/7

Hope it helps

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Consider in the figure below.

yawa3891 [41]

Here BD is perpendicular bisector

UB=BV=74

$\\ \tt\hookrightarrow UV=74+74=148$

Apply Pythagorean theorem

$\\ \tt\hookrightarrow BD^2=UD^2-UB^2=UD^2-VD^2$

UD=VD=78=TD

$\\ \tt\hookrightarrow TC^2=TD^2-CD^2$

$\\ \tt\hookrightarrow TC^2=78^2-30^2$

$\\ \tt\hookrightarrow TC^2=6084-900=5184$

$\\ \tt\hookrightarrow TC=72$

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3 years ago

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A grade has 81 girls and 72 boys. the grade is split into groups that have the same ratio of girls to boys as the whole grade. h

Arturiano [62]

Answer:

There are 18 girls in a group that has 16 boys.

Step-by-step explanation:

1. Let's review the information given to us for solving the question:

Number of girls in the grade = 81

Number of the boys in the grade = 72

Number of students in the grade = 81 + 72 = 153

2. Let's find the number of girls in a group that has 16 boys.

For getting that number we will use the Rule of three simple, this way:

Number of girls in a group that has 16 boys = (81 * 16)/72

Number of girls in a group that has 16 boys = 1,296 / 72

Number of girls in a group that has 16 boys = 18

There are 18 girls in a group that has 16 boys.

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Dima020 [189]

Answer:

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Step-by-step explanation:

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144 degrees, q=s, so 3a=4a-12. a=12, and 12*12= 144

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x = 3

Step-by-step explanation:

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