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alexandr402 [8]
3 years ago
5

The number of students in math to english class is 4:5. There are 1500 students in the building . How many are in the math class

Mathematics
1 answer:
Rus_ich [418]3 years ago
6 0

Answer:

667 students are in math class

Step-by-step explanation:

Step 1: Find the total number of parts Looking at the ratio 4:9, we have: 4 + 5 = 9 So, we have 9 parts in total.

First divide by 9

1500/9=166.666667

now multiply by 4

666.666667

now round up

667

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Find the point P along the directed line segment from point A(–13, 6) to point B(2, 20) that divides the segment in the ratio 2
VARVARA [1.3K]

Answer:

(-4, 14.4)

Step-by-step explanation:

The midpoint formula is expressed as;

M(X, Y) = {(ax1+bx2/a+b), ay1+by2/a+b}

Get X;

X = ax1+bx2/a+b

X = -13(2)+ 2(3)/2+3

X = -26+6/5

X = -20/5

X = -4

Get Y:

Y =ay1+by2/a+b

Y = 2(6)+3(20)/2+3

Y = 12+60/5

Y = 72/5

Y = 14.4

Hence the coordinate of point P dividing A and B in the ratio 2 to 3 is

(-4, 14.4)

5 0
3 years ago
A human hair has width of about 6.5 x 10^-5 meter. What is this width written in standard notation
AnnyKZ [126]

Answer:

0.000065 m

Step-by-step explanation:

6.5 ×10^{-5}  =  0.000065

Hope this helps

8 0
2 years ago
If someone helps me I’ll give brainless
Sunny_sXe [5.5K]

Answer:

128

Step-by-step explanation:

The two angles form a straight line so they add to 180

2m+62  + 3m +143 = 180

Combine like terms

5m+205=180

Subtract 205 from each side

5m+205-205=180-205

5m = -25

Divide by 5

5m/5 = -25/5

m = -5

We want to find the angle so we substitute the value of m into the the formula for the angle.

< RBM =3m +143 = 3(-5) +143 = -15+143 =128

6 0
3 years ago
What number is 25% of 20?
azamat

Answer: 5

Step-by-step explanation:20 times .25

6 0
3 years ago
Read 2 more answers
Find the value of x in each case. Give reasons to justify your solutions!
tangare [24]

Answer:

x=27°

Step-by-step explanation:

we know that

<u><em>The Triangle Exterior Angle Theorem</em></u>, states that: An exterior angle of a triangle is equal to the sum of the opposite interior angles

step 1

Find the measure of angle PLM

we know that

m∠PLM+m∠LPM=m∠PMN ----> by Triangle Exterior Angle Theorem

we have

m∠LPM=x°

m∠PMN=2x+72°

substitute

m∠PLM+x=2x+72°

m∠PLM=2x-x+72°

m∠PLM=x+72°

step 2

Find the measure of angle x

we know that

3x+m∠PLM=180° ----> by supplementary angles (form a linear pair)

we have

m∠PLM=x+72°  (see step 1)

substitute

3x+x+72°=180°

4x=180°-72°

4x=108°

x=27°

4 0
3 years ago
Read 2 more answers
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