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3 years ago

Help me with this question please

Mathematics

1 answer:

Alexus [3.1K]3 years ago

7 0

Answer: B. x = 40

Step-by-step explanation:

The angles given are supplementary.

Supplementary angles are any two angles that add to 180 degrees, most commonly seen on one side of a straight line.

As these angles are supplementary, we can solve for x by adding both angles to get 180:

$(3x + 15) + 45 = 180\\\\3x + 60 = 180\\\\3x = 120\\\\x = 40$

This means that the angle on the left is (3*40) + 15, or 135 degrees, while the angle on the right is 45 degrees. These angles add to 180 degrees.

The correct answer choice is B.

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Can someone help me I have two more other questions they are 15 points each I just posted them right now! Thanks so much

nlexa [21]

Answer:

$10 coins: 21

$20 coins: 24

Step-by-step explanation:

heyy me again

So we can create 2 equations where

x = number of $10 coins

y = number of $20 coins:

x + y = 45

10x + 20y = 690

we can move equation 1 around so that we can get a value of x

x = 45 - y

now we can substitute x into the second equation

10(45 - y) + 20y = 690

450 - 10y + 20y = 690

10y = 240

y = 24

Now plug in y back into the first equation

x = 45 - y

x = 45 - 24

x = 21

8 0

2 years ago

Determine whether the congruence is true or false.<br> 12 ≡ 10 mod 5

dolphi86 [110]

Answer:

The given congruence is false.

Step-by-step explanation:

Given : Expression $12 \equiv 10 \mod 5$

To find : Determine whether the congruence is true or false ?

Solution :

The congruence is in the form $x\mod y\equiv r$

where, x is the dividend

y is divisor

r is the remainder

So, We find $10 \mod 5$

We know, 10 is completely divide by 5 and we get quotient is 2 and remainder is 0.

$10 \mod 5=0$

As $0\neq 12$

Therefore, The given congruence is false.

8 0

3 years ago

I need serious help with this equation.

garri49 [273]

Answer:

First, it’s already telling you that you need to find d, which is the opposite of degree 59. This means you have to do the exact thing for degree 37. Since it’s already telling you to use sine, you need to look at the opposite side of 37 which is 98.4.

So ? is 98.4

Now, you need to find sin 59 / d.

First, plug in sin 98.4 sin (37) in your calculator (make sure it’s in degree setting)

The result is 59.2.

Now, 59.2 = sin 59 / d.

Switch sides like this: d = 59.2 sin (37)

And the answer is approximatley d = 35.6

? = 98.4

d = 35.6

8 0

3 years ago

Find the slope of the line

Tju [1.3M]

Explanation:

The slope formula: y/x

Answer:

1/3

7 0

3 years ago

A road rises vertically 4 feet for every 50 feet traveled horizontally. What is the rate of

kenny6666 [7]

Answer:

4/50 or 2/25

Step-by-step explanation:

Slope/rate of change is defined as the vertical distance over horizontal. then simplify.

6 0

2 years ago