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Vika [28.1K]
3 years ago
8

Please help!!!!!I’ll mark you as brainliest!!!!!

Mathematics
1 answer:
Fittoniya [83]3 years ago
3 0

Answer:

B

Step-by-step explanation:

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Whats the solution for the sum of a number and 19 is at least 8.2?
Alina [70]
The number would be -10.8 19 + (-10.8) = 8.2 I hope that helps!
8 0
3 years ago
Please, please help me! I don't even know where to start with solving this...
zvonat [6]
Factorize the left hand side and equate the factors to zero.

Then, use the notation that : sec x = 1/cosx and csc x = 1/sinx

Result: x = ± π3 + 2πk , k∈Z

3 0
4 years ago
Suppose the dimensions of a rectangular pyramid are doubled. How does this affect its volume?
andriy [413]

Answer:

I think its 2 times the original volume, im so sorry if im wrong!!

Step-by-step explanation:

Edit: I thought it was two but i guess it was 4, heres the real answer for people who were wondering, im so sorry!!

8 0
3 years ago
In parallelogram ABCD, diagonals AC and BD intersect at point E, BE =2x^2-3x, and DE=x^2+10. What is BD? Enter your answer in th
dexar [7]

Answer:

70

Step-by-step explanation:

In parallelogram ABCD, diagonals AC and BD intersect at point E

E is the midpoint of BD

So BE = DE

Given: BE =2x^2-3x, and DE=x^2+10

BE = DE

2x^2-3x = x^2+10 (solve for x)

Subtract x^2 and 10 on both sides

2x^2-3x- x^2-10=0

x^2-3x-10=0

Factor x^2-3x-10

(x-5)(x+2) = 0

x-5 =0  so x=5

x+2=0 so x=-2

Length x cannot be negative so we ignore x=-2

Lets plug in 5 for x  and find out BE  and DE

BE =2x^2-3x= 2(5)^2-3(5)= 50-15= 35

DE =x^2+10= (5)^2+10=35

BD = BE + DE= 35+35 = 70

So BD = 70




6 0
3 years ago
Will someone please explain how to do
MrRissso [65]
Distribute the negative first -7c+18-2>0
simplify -7c+16>0
subtract 16 both sides -7c>-16
divide by -1
MOST IMPORTANT PART
when you divide both sides by -1, you HAVE to change the greater/less than sign
so -7c>-16 becomes 7c<16
now divide by 7
c<16/7
I hope you don't yet want to graph it, because graphing is something that's a bit harder to show here

6 0
3 years ago
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