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2 years ago

A tv has height ratio 3:4. In a scale drawing the height is 4.5cm what would the width be?

1 answer:

8 0

4.5 ÷ 3 = 1.5
This means that the ratio has increased by 1.5

Since anything multiplied on one side of a ratio has to be multiplied on the other side too, we multiply 1.5 by 4:
1.5 X 4 = 6

The width would be 6cm

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(The photo is too big to fit so don't mind that.)

mafiozo [28]

Answer:

Step-by-step explanation:

1'st step: $a^{2}$ + $b^{2}$ = $c^{2}$ is the formula for the pythagorean theorem

2'nd step : $18^{2}$ + $80^{2}$ = $c^{2}$

3'rd step: 324+6400 = $c^{2}$

4'rd step: 6724= $c^{2}$

5'th step: $\sqrt{6724}$ =82

6'th step : therefore the value of c is 82 cm

8 0

2 years ago

4.05 LC)

Goshia [24]

Answer:

Step-by-step explanation:

we know this because it is the only part of the graph that is moving downwards, meaning its decreasing. P is an example of increasing, Q is 'neutral' and s is also increasing.

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2 years ago

A class has 216 pupils one third are boys how many are girls ?

harina [27]

144 girls , 1/3 = 72 , 2/3 = 144

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3 years ago

Researchers at Gallup were interested in whether there was a decrease in the proportion of nonretirees (in other words, people w

Lera25 [3.4K]

Answer:

A. We have extremely strong evidence to reject H0.

Step-by-step explanation:

Let P be the proportion of non-retirees in 2015 who did not think that Social Security would be able to pay a retirement benefit by the time that they retire.

According to the data null and alternative hypotheses should be:

$H_{0}$ : P=0.60

$H_{a}$ : P<0.60

Test statistics is -4.29 and p-value of the statistics is p<0.001

At every significance levels higher than 0.001, we can reject the null hypothesis since p<0.001.

8 0

3 years ago

The measure of an exterior angle of a triangle is 3x-5 degrees. The measure of the corresponding interior angle is 5x+17 degrees

adelina 88 [10]

Things to remember the sum of the measures of the interior and exterior angles at each vertex is 180 (supplementary angles) add and equal to 180 3x-5+5x+17= 180 8x+12=180 8x= 168 x=21 substitute in the algebraic expression for exterior angle 3(21) -5= 63-5=58 58 degrees is the exterior angle hope this helps

8 0

2 years ago