All categories

4 years ago

When combining like terms what is 8m - 10m?

Mathematics

2 answers:

Bogdan [553]4 years ago

8 0

Answer:

-2m

Step-by-step explanation:

Since the numbers will go below 0 we have to make it in negative numbers

Leno4ka [110]4 years ago

3 0

-2m
Hope it helps!!!!!!!!

You might be interested in

The expression 5x2 + 2x + 3 represents the area of a square. The area of

lora16 [44]

The correct answer is C

6 0

3 years ago

Read 2 more answers

1.The angle of elevation of a jet plane from a point R on the ground is 60°. After a flight of

egoroff_w [7]

Answer:

Diagram is not so perfect

OR = distance travelled by the jet plane.

Step-by-step explanation:

Let point J be the jet plane and OJ be the constant height at jet plane is flying and OR be the distance jet plane is travelling.

h =

$1700 \sqrt{3}$

Now,

From the figure i drew (1st)

taking 60 as reference angle,

tan60° = p/b

or,

$tan60 = 1700 \sqrt{3} \div b$

$b \: = 1700 \sqrt{3} \div tan60$

so, b = 1700m

inital distance = 1.7km(OR)

now,

tan 30 = p/b

$tan30 = 1700 \sqrt{3} \div b \\ or \: b = 1700 \sqrt{3} \div tan30$

so, b = 5100 m

so, final distance = 5.1 km(OR)

Now,

distance travelled = final distance - initial distance

distance travelled = 5.1 km - 1.7km

distance travlled = 3.4 km

Now,

time = 17 seconds

= 0.00472 hour.

Now,

speed = d/t

or, speed = 3.4/0.00472

so, speed = 720.3389km/hr

so, speed = 720 km/hr approximately

5 0

3 years ago

Factor out the greatest common factor. If the greatest common factor is 1, just retype the

svet-max [94.6K]

2b + 6
2(b+3)

if you distribute 2(b+3), you get 2b+6

4 0

4 years ago

PLEASE HELP WITH QUICK QUESTION! 25 POINTS!

Damm [24]

Isn’t it a 90 degree angle

6 0

3 years ago

Read 2 more answers

The mean salary of actuaries is LaTeX: \mu=\$100,000????=$100,000 and the standard deviation is LaTeX: \sigma=\$36,730????=$36,7

krek1111 [17]

Answer:

The lower limit of 95% confidence interval is 99002.

Step-by-step explanation:

We are given the following in the question:

Population mean, μ = $100,000

Sample mean, $\bar{x}$ = $111,000

Sample size, n = 36

Alpha, α = 0.05

Population standard deviation, σ = $36,730

First, we design the null and the alternate hypothesis

$H_{0}: \mu = \$100,000\\H_A: \mu \neq \$100,000$

We have to find the lower limit of the 95% confidence interval.

95% Confidence interval:

$\mu \pm z_{critical}\frac{\sigma}{\sqrt{n}}$

Putting the values, we get,

$z_{critical}\text{ at}~\alpha_{0.05} = 1.96$

$111000 \pm 1.96(\dfrac{36730}{\sqrt{36}} )\\\\ = 111000 \pm 11998.4667 \\= (99001.5333,122998.4667)\\ \approx (99002,122999)$

The lower limit of 95% confidence interval is 99002.

6 0

4 years ago