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3 years ago

Help please asap I NEED THE WORKING TOO!!!!!!!

Mathematics

2 answers:

Yanka [14]3 years ago

8 0

Answer:

9/7 =a

Step-by-step explanation:

9 / -a + 15 = 8

Subtract 15 from each side

9 / -a + 15 -15 = 8-15

9 / -a = -7

Multiply each side by -a

9/-a * -a = -7 * -a

9 =7a

Divide each side by 7

9/7 = 7a/7

9/7 =a

Masteriza [31]3 years ago

7 0

Answer:

9 / 7 = a

Step-by-step explanation:

9 / - a + 15 = 8

Determined the defined range

9 / ( - a ) + 15 = 8 , a ≠ 0

subtract 15 from each side

9 / - a + 15 - 15 = 8 - 15

calculate the difference

9 / - a = - 7

multiply both side of equation by - a

9 / - a × - a = - 7 × - a

9 = 7 a

divide each side by of equation by 7

9 / 7 = 7 a / 7

9 / 7 = a

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Plz Help ASAP! I will mark Brainliest!

ss7ja [257]

Answer:

1. ∠A = 70, ∠B = 50, ∠C = 60

2. y = 52

Step-by-step explanation:

The exterior angle and the interior to that would have a SUM of 180.

So, if exterior to ∠C is 120, we can say:

exterior to C + ∠C = 180

120 + ∠C = 180

∠C = 180 - 120 = 60

∠C = 60

We also know sum of all 3 angles in a triangle is 180. Thus we can write:

∠A + ∠B + ∠C = 180

2x + x + 15 + 60 = 180

3x + 75 = 180

3x = 105

x = 105/3

x = 35

Thus,

∠A = 2x = 2(35) = 70

∠A = 70

and

∠B = x + 15 = 35 + 15 = 50

∠B = 50

2. The angle "4x" and its exterior angle "5x" is a straight line, so the sum is 180. Now, we find x:

4x + 5x = 180

9x = 180

x = 180/9

x = 20

So, we can say the angle "4x" is 4(20) = 80

We know sum of 3 angles of a triangle is 180, thus:

y + 48 + 80 = 180

y + 128 = 180

y = 180 - 128

y = 52

6 0

3 years ago

Is 0.35 l greater than 300 ml

muminat

Yes 0.35 L is greater than 300 ml

4 0

3 years ago

100 POINTS FOR WHO EVER SHOWS THE WORKS AND ANSWERS CORRECTLY. LEGIT 4 QUETIONS BUT MUST SHOW WORK!!

lianna [129]

Step-by-step explanation:

Hey there!

1.》 Let the unknown angle be 'x'.

Now,

x+ 29° + 105° = 180° [ Sum of interior angle of a triangle is 180°]

x = 180° - 134°

x = 46°

Therefore the missingangle is 46°.

2.》Angle 1 = 78° + 55° [ Exterior angleis equal to the measure of adjacent interior angle]

angle 1 = 133°

Therefore the measure of angle 1 is 133°.

3.》Angle 2 + 55° + 78°= 180° [ Sum of interior angle of a triangle is 180°]

angle 2 = 180° - 133°

angle 2 = 47°

Therefore the measure of angle 2 is 47°.

4.》It's is obvious that the measure of exterior angle is equal to opposite adjacent interior angle of a triangle.

See in picture;;; for more description for no.4.

Hope it helps...

8 0

3 years ago

The school that Beth goes to is selling tickets to a spring musical. On the first day of ticket sales

Maru [420]

Answer:

Student tickets are $14 each

Senior Citizen tickets are $4 each

Step-by-step explanation:

Let C be the price of a Senior Citizen ticket, and S be the price of a Student ticket.

We learn that on the first day:

2C + 7S = $106

On the second day:

3C + 14S = $208

We have two equations and two unknowns. Rearrange either equation to isolate either C or S and use that value in the other equation.

I'll choose 2C + 7S = $106

C = ($106 - 7S)/2

Use this in the other equation:

3C + 14S = $208

3(($106 - 7S)/2) + 14S = $208

($318 - 21S)/2 + 14S = $208

$159 - 10.5S + 14S = $208

3.5S = $49

S = $14 Student tickets are $14 each

Use this answer in either equation to find C:

C = ($106 - 7S)/2

C = ($106 - 7($14))/2

C = $4 Senior Citizen tickets are $4 each

====

Check to see if these values work in the original equations:

1. 2C + 7S = $106

2($4) + 7($14) = $106 ?

$8 + $98 = $106 ? YES

2. 3C + 14S = $208

3($4) + 14($14) = $208 ?

$12 + $196 = $208 ? YES

3 0

2 years ago

Which expression is equivalent to x^-5/3

VikaD [51]

Answer:

Step-by-step explanation:

Since the power is negative, you automatically know it has to be a or b, because the only way it would be negative is if it was brought from the denominator to the numerator.

The answer is B, because the numerator of the power, is what is inside the square root, while the denominator is what is outside the square root.

5 0

3 years ago

Help please asap I NEED THE WORKING TOO!!!!!!!​

Help please asap I NEED THE WORKING TOO!!!!!!!