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4 years ago

Find the area of a triangle when A=63degrees b=9feet and c=7feet

Mathematics

1 answer:

choli [55]4 years ago

5 0

Answer:28.0665 square feet

Step-by-step explanation:

b=9

c=7

angle A=63°

Area of =(bxcxsinA)/2

Area of =(9x7xsin63)/2

Area of =(9x7x0.8910)/2

Area of =(56.133)/2

Area of =28.0665

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There are 14 boys and 21 girls in seventh grade class what is the ratio of boys to girls in simplified form ??

Tanzania [10]

The ratio of boys to girls would be $\frac{14}{21}$ since you can divide both 14 and 21 by 7, the simplified form would be $\frac{2}{3}$ .

The answer is 2 to 3.

4 0

3 years ago

LAST ONE GUYSSS \small \angle L and \small \angle M are supplementary, \small m\angle L=12x+45 and \small m\angle M=18x-30. Dete

svp [43]

Answer:

$m\angle L = 111\degree \\m\angle M = 69\degree$

Step-by-step explanation:

Since, angle L and angle M are supplementary.

$\therefore m\angle L + m\angle M= 180\degree \\ \therefore \: 12x + 45 + 18x - 30 = 180 \degree \\ \therefore \: 30x + 15= 180 \degree\\ \therefore \: 30x= 180 \degree - 15 \degree\\ \therefore \: 30x= 165 \degree \\ x = \frac{165 \degree}{30} \\ x = 5.5 \degree \\ \\ m\angle L = 12x + 45 \\ m\angle L = 12 \times 5.5 + 45 \\ m\angle L = 66 + 45 \\ \huge \red{ \boxed{ m\angle L = 111 \degree}} \\ \\ m\angle M=18x - 30 \\ m\angle M=18 \times 5.5 - 30 \\ m\angle M=99 - 30 \\ \huge \purple{ \boxed{ m\angle M=69 \degree}} \\$

6 0

3 years ago

22.2 divided by 0.02 is

Tanya [424]

Answer:

1110

Step-by-step explanation:

3 0

3 years ago

Read 2 more answers

Can we prove that △PQR and △PQS are congruent using the side-side-side (SSS), side-angle-side (SAS), or angle-side-angle (ASA) c

7nadin3 [17]

Here are the properties you should look out for. hope it's easier to understand! :)

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4 years ago

Castel and Chelsea are selling pies for a school fundraiser. Customers can buy cherry pies and lemon meringue pies. Castel sold

tiny-mole [99]

Answer:

the cost each of one cherry pie and one lemon meringue pie is 9 and $12 respectively

Step-by-step explanation:

The computation of the cost of one cherry pie and the lemon meringue pie is shown below:

Let us assume the cherry pie be x

And, the lemon meringue pie be y

So according to the question

x + 5y = $69

5x + 7y = $129

Now multiply by 5 in the equation 1

5x + 25y = $345

5x + 7y = $129

18y = $216

y = $12

And, x would be

x + 5($12) = $69

x = $9

Hence, the cost each of one cherry pie and one lemon meringue pie is 9 and $12 respectively

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3 years ago