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Yuki888 [10]
3 years ago
13

PLEASE HELP ASAP!!!

Mathematics
1 answer:
Elan Coil [88]3 years ago
6 0

Answer:

The number is 5

Step-by-step explanation:

6+3n = 5n-4

Subtract 3n from each side

6+3n-3n = 5n-3n-4

6 = 2n-4

Add 4 to each side

6+4 = 2n-4+4

10= 2n

Divide by 2

10/2 =2n/2

5=n

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Vlad1618 [11]

Answer:

The third option

Step-by-step explanation:

This is because you plug in 1 as a test into each of the equations and see if it equals to 12.25. It works for the third option. To verify that you can also plug in different x values and see if they match the y value.

6 0
3 years ago
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Use the diagram to answer the question. What is the measure of ∠A? Enter the correct value. Do not enter the degree symbol.
forsale [732]

Answer:

Measure of ∠A = 60.07°

Step-by-step explanation:

From the figure attached,

ΔABC is a right triangle,

Measure of side AC = 15 units

and measure of side BC = 13 units

By applying Sine rule in this triangle,

SinA = \frac{\text{Opposite side}}{\text{Hypotenuse}}

Opposite side of angle A = Side AC

and hypotenuse of the triangle = Side BC

SinA = \frac{13}{15}

    A = \text{Sin}^{-1}(\frac{13}{15})

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Therefore, measure of angle A is 60.07°.

4 0
3 years ago
AOC and BOD are diameters of a circle, centre O. Angles BAD and CDA are 90°. Prove that triangle AND and triangle DCA are congru
ololo11 [35]

Answer:

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Step-by-step explanation:

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2 years ago
Carl is boarding a plane. He has 2 checked bags of equal weight and a backpack that weighs 4 kg. The total weight of Carl's bagg
aniked [119]
<span>Carl has 3 bags in total. One backpack weighs 4 kg and the rest two checking bags have the equal weight. The total weight of 3 bags is given to be 35 kg.

Let the weight of each checking bag is w kg. So we can write:

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Using the values, we get:

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5 0
3 years ago
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kow [346]

Answer:

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Step-by-step explanation:

520:480

Divide both numbers by GCF (40)

13:12

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