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jekas [21]
3 years ago
9

Gaveing out points for helpers!!​

Mathematics
1 answer:
Alekssandra [29.7K]3 years ago
3 0
Because the two angles add up to equal 90, you would make an equation set to equal 90. On the other end you add the measures of your angles together because they are adding up to equal 90. This would look like 2x+5+35=90 and you solve from here. Add like terms making it 2x+40=90 then you subtract 40 from both sides making it 2x=50 and then divide by 2 on both sides which leaves you with x=25.
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If the expression 9x + (4 – 3x) + 7is simplified completely, how many terms will the expression contain?
tamaranim1 [39]

Answer: 2 terms

Step-by-step explanation:

There are two terms because

One is __x the other is the constant

9x + 4 - 3x + 7

6x + 4 - 7

6x - 3 has two terms

4 0
3 years ago
Read 2 more answers
The life spans of a computer manufacturer’s hard drives are normally distributed, with a mean of 3 years 6 months and a standard
german

The probability of a randomly selected hard drive from the company lasting between 2 years 3 months and 3 years 3 months is 32.22%

Given here,

Mean (μ) = 3 years 6 months

= (3×12)+6 = 42 months

Standard deviation (σ) = 9 months

We will find the z-score using the formula: z = (X - μ)/σ

Here X₁ = 2 years 3 months

= (2×12)+3 = 27 months

and X₂ = 3 years 3 months

= (3×12)+3 = 39 months

So, z (X₁ =27) = \frac{27-42}{9} = \frac{-15}{9}= \frac{-5}{3}=-1.666...

and z (X₂ =39) = \frac{39-42}{9}  = \frac{-3}{9}= \frac{-1}{3}= -0.333...

According to the standard normal table,

P(z> -1.666...) = 0.0485 and P(z< -0.333...) = 0.3707

So, P(27 < X < 39)

= 0.3707 - 0.0485

= 0.3222

= 32.22 % [Multiplying by 100 for getting percentage]

So, the probability of a randomly selected hard drive from the company lasting between 2 years 3 months and 3 years 3 months is 32.22%

4 0
3 years ago
Read 2 more answers
Please help me!!! ASAPP
larisa86 [58]

Answer:

x=2 y=8 ---> (2;8)

Step-by-step explanation:

2x+5y=44

6x-4=y

1.

2x+5(6x-4)=44

2x+30x-20=44

32x=64

x=2

2.

6x-4=y

6*2-4=y

12-4=y

y=8

5 0
3 years ago
Red and white paint are mixed to make pink paint. If the amount of red paint needed is half the amount of white paint, how many
Lady_Fox [76]

Answer:

We will need about 3.3 gallons of red paint.

Step-by-step explanation:

Let

  • r = amount of red paint
  • w = amount of white paint

The amount of red paint is half the amount of white paint.

r = 1/2 w

w = 2r [1]

We need to make a total of 10 gallons. Then,

r + w = 10 [2]

Replacing [1] in [2]

r + (2r) = 10

3r = 10

r = 3.3

We will need about 3.3 gallons of red paint.

5 0
3 years ago
A race car driver under the caution flag at 10 feet per second begins to accelerate at a constant rate after the warning flag. T
Ad libitum [116K]
It would take the car 20 seconds
7 0
3 years ago
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