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3 years ago

What Times what equals -270 but when you add those two numbers together will get -3

Mathematics

1 answer:

Natasha2012 [34]3 years ago

5 0

-18 and 15. Since 8-5 is 3, then -18+15= -3.

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Find a solution for the equation. Assume that all angles are acute angles.

Mekhanik [1.2K]

tan(3θ + 17) = cot(θ + 7)
(3θ + 17) + (θ + 7) = 90
(3θ + θ) + (17 + 7) = 90
4θ + 24 = 90
- 24 - 24
4θ = 66
4 4
θ = 16.5

3 0

3 years ago

i am not 42 but i am an EVEN number. i am more than 25 but less than 50. i am a multiple of 6 but do not have a digit of 3.

sertanlavr [38]

So easyies way is find all multiplues of 6 that are less than 50

6
12
18
24
30
36
42
48

and not 42
6
12
18
24
30
36
48
more than 25
30
35
48

do not have a 3 in them
48

the answer is 48

5 0

3 years ago

Read 2 more answers

I need help :(( I need to divide then put it in simplest form

ValentinkaMS [17]

2*3/8

whenever dividing the second fraction flips

2*3/8

You can divide by 2 for 2 and 8

2/2=1

8/2=4

1/4*3

=3/4

Answer is 3/4

7 0

3 years ago

Read 2 more answers

Find the ordered pairs for the x- and y- intercept of the equation 8x-2y=16 and select the appropriate option below.

faust18 [17]

Answer:

Step-by-step explanation:

8 0

3 years ago

A meteorologist is studying the speed at which thunderstorms travel. A sample of 10 storms are observed. The mean of the sample

dezoksy [38]

Answer:

The 95% confidence interval for the true mean speed of thunderstorms is [10.712, 13.688].

Step-by-step explanation:

Given information:

Sample size = 10

Sample mean = 12.2 mph

Standard deviation = 2.4

Confidence interval = 95%

At confidence interval 95% then z-score is 1.96.

The 95% confidence interval for the true mean speed of thunderstorms is

$CI=\overline{x}\pm z*\frac{s}{\sqrt{n}}$

Where, $\overline{x}$ is sample mean, z* is z score at 95% confidence interval, s is standard deviation of sample and n is sample size.

$CI=12.2\pm 1.96\frac{2.4}{\sqrt{10}}$

$CI=12.2\pm 1.487535$

$CI=12.2\pm 1.488$

$CI=[12.2-1.488, 12.2+1.488]$

$CI=[10.712, 13.688]$

Therefore the 95% confidence interval for the true mean speed of thunderstorms is [10.712, 13.688].

4 0

3 years ago