All categories

3 years ago

HELP!! WILL MARK BRAINLIEST!! SEE ATTACHMENT AND ANSWER THEM ALL!

Mathematics

2 answers:

Irina18 [472]3 years ago

7 0

Answer: yes, yes, no, yes, no

Anna [14]3 years ago

5 0

Answer:

1.) yes

2.)yes

3.)no

4.)yes

5.)no

Step-by-step explanation:

You might be interested in

The diagonal shortcut across a rectangular parking lot is 169 feet long. The lot is 144 feet wide. What is the length of the lot

Alexeev081 [22]

Answer: I think it is 25.5ft

5 0

3 years ago

A turtle walks 5/8 of a mile in 50 minutes. How many minutes will it take for the turtle to walk 1 mile? ANSWER ASAP!!!!

Vlad1618 [11]

I'm pretty sure the answer would be 80 minutes

7 0

3 years ago

Read 2 more answers

A quality control expert at Glotech computers wants to test their new monitors. The production manager claims they have a mean l

Mariana [72]

Answer:

Step-by-step explanation:

Hello!

X: the lifespan of a new computer monitor of Glotech.

The average life is μ= 85 months and the variance δ²= 64

And a sample of 122 monitors was taken.

You need to calculate the probability that the sample mean is greater than 86.6 months.

Assuming that the variable has a normal distribution X~N(μ;δ²), then the distribution of the sample mean is X[bar]~N(μ;δ²/n)

To calculate this probability you have to work using the sampling distribution and the following formula Z= (X[bar]-μ)/δ/√n ~N(0;1)

P(X[bar]>86.6)= 1 - P(X[bar]≤86.6)

1 - P(Z≤(86.6-85)/(8/√122))= 1 - P(Z≤2.21)= 1 - 0.98645= 0.013355

The probability of the sample mean is greater than 0.013355

I hope this helps!

7 0

3 years ago

Find the area of each figure. (Or as much as u can)

Elenna [48]

9514 1404 393

Answer:

7. 91 m²

8. 56 in²

9. 105 in²

10. 135 m²

Step-by-step explanation:

The formula for the area of a triangle is ...

A = 1/2bh

where b is the base length, and h is the height perpendicular to the base.

The formula for the area of a trapezoid is ...

A= 1/2(b1 +b2)h

where b1 and b2 are the lengths of the parallel bases, and h is the perpendicular distance between them. Note that this formula is virtually identical to the triangle formula, with the triangle 'b' being replaced by (b1+b2).

Fill in the numbers and do the arithmetic. The result is shown in the attachment. (We have used the triangle formula for all, with b1+b2 being used for 'b' to find the area of the trapezoids.)

7. A = 1/2(14 m)(13 m) = 91 m²

8. 56 in²

9. A = 1/2(14 +16 in)(7 in) = 105 in²

10. 135 m²

5 0

2 years ago

F+8≤3 and f+9≥-4 answer using interval notation

KATRIN_1 [288]

F + 8 - 8 ≤ 3 - 8
f ≤ -5
next one
f + 9 - 9 ≥ -4 - 9
f ≥ -13

6 0

3 years ago