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3 years ago

Which of the following groups of numbers are all prime numbers? A. 3, 11, 23, 31 B. 2, 3, 5, 9 C. 2, 5, 15, 19 D. 7, 17, 29, 49

Mathematics

2 answers:

puteri [66]3 years ago

6 0

I think it is A. or D

Mekhanik [1.2K]3 years ago

3 0

A because 9 is not prime in answer B, 15 is not prime in answer C, and 49 is not prime in answer D. So the correct answer is A.

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Select the choice that has the correct area and perimeter for the figure .

laila [671]

Answer: B

Step-by-step explanation:

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2 years ago

What’s the answer to 14?

vfiekz [6]

Answer:

|t -(-5)| = 1.5
[-6.5, -3.5] = [minimum, maximum]

Step-by-step explanation:

The magnitude of the difference between the temperature (t) and -5 will be 1.5 at the limits:

|t -(-5)| = 1.5

This is equivalent to two equations:

t +5 = -1.5
t +5 = 1.5

In each case, the equation is solved by subtracting 5 from both sides:

t = -6.5 . . . . minimum allowed temperature
t = -3.5 . . . . maximum allowed temperature

7 0

2 years ago

10. rhombus abcd has vertices at a(-2, 7), b(8, 7), c(2, -1), and d (-8, -1).

horrorfan [7]

Answer: 80

Step-by-step explanation:

We can use the formula $A=\frac{d_{1}d_{2}}{2}$ , where $d_{1}, d_{2}$ are the lengths of the diagonals.

By the distance formula,

$AC=\sqrt{(-2-2)^{2}+(-1-7)^{2}}=\sqrt{16+64}=4\sqrt{5}\\BD=\sqrt{(-8-8)^{2}+(-1-7)^{2}}=\sqrt{256+64}=8\sqrt{5}$

So, the area is $\frac{(4\sqrt{5})(8\sqrt{5})}{2}=\boxed{80}$

6 0

1 year ago

Please help me I will crown

-Dominant- [34]

Answer:

B or D would be the best options for this question

3 0

2 years ago

Read 2 more answers

X÷ 5+1 = 11<br> X =<br> What does X =

Serjik [45]

Answer:

x = 2

Step-by-step explanation:

x/5 + 1 = 11
x/5 = 10
x = 50

7 0

1 year ago