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2 years ago

12

the ratio of the number of boys to the number of girls in a school is seventh to nine if there are 1240 students in the school h

ow many girls are there

1 answer:

Papessa [141]2 years ago

7 0

There are 137.7 girls. Divide 1240 by 9.

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In XYZ, mX=90 and mY=30.In TUV,mU= 30 and mV=60. Which is true about the two triangles? XYZ=TUV, XYZ= VUT,No congruency statemen

Flauer [41]

Answer:

No congruency statement can be made because the side length are unknown.

Step-by-step explanation:

The sum of the measures of all interior angles in a triangle is always 180°.

In triangle XYZ,

$m\angle X=90^{\circ}\\ \\m\angle Y=30^{\circ},$

then

$m\angle X+m\angle Y+m\angle Z=180^{\circ}\Rightarrow m\angle Z=180^{\circ}-90^{\circ}-30^{\circ}=60^{\circ}$

In triangle TUV,

$m\angle U=30^{\circ}\\\\m\angle V=60^{\circ},$

then

$m\angle T+m\angle U+m\angle V=180^{\circ}\Rightarrow m\angle T=180^{\circ}-30^{\circ}-60^{\circ}=90^{\circ}$

We have two triangles with congruent angles but we have no information about side lengths. Therefore, can not be made because the side length are unknown. Correct option is last option.

6 0

2 years ago

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− 2/3 (−3 − 9x) A) −2 − 9x <br> B) 2 − 9x <br> C) 2 − 6x <br> D) 2 + 6x

ANEK [815]

Answer:

D 2+6x

Step-by-step explanation:

-2/3(-3-9x)

(-2/3×-3)+(-2/3×-9x)

6/3+18x/3 = 2 + 6x

8 0

2 years ago

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WHATS THE FRACTION FOR 6 DOLLARS AND 14 CENTS

Jet001 [13]

Answer:

$6\frac{14}{100}$

Step-by-step explanation:

First, you make fourteen a fraction.

$\frac{14}{100}$

Then, make it a mixed fraction by adding a six.

$6\frac{14}{100}$

Lastly, have a great day! :)

3 0

2 years ago

GCF of the numbers 15 and 27

balandron [24]

Three would be your answer :)

6 0

3 years ago

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Please help I do not get

katen-ka-za [31]

Answer:

(a) 51%

(b) 41%

Step-by-step explanation:

We can simplify this problem down by realizing that the amount of girls over 200 will get us our percentage as a decimal.

Looking at this table, we can see that $30+72=102$ girls were asked. So, $102\div200=0.51$ , and $0.51\cdot100=51$ .

We can also see that $30+52=82$ people preferred video games, so $82\div200=0.41$ , and $0.41\cdot100=41$ .

Hope this helped!

8 0

2 years ago

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