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Ivanshal [37]
3 years ago
7

I need help finding this answer please

Mathematics
1 answer:
Maslowich3 years ago
8 0
To solve this you need to use the formula for Chord-Chord length. You need to know it, it is ab=cd. with this, we can plug numbers in.
a=30
b=x+1
c=2x-6
d=21
So our new equation is:
30(x+1)=21(2x-6)
30x+30=42x-126
156=12x
x=13
This isn't what the question is askign for though, it wants YZ
Which is A+B or 30+x+1 or 21+13=34. 
YZ=34

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Someone please help!
USPshnik [31]
Here are the log properties you need:
log(ab) = log(a) +log(b) \\  \\ log(\frac{a}{b}) = log(a) - log(b) \\  \\ log(a^n) = n log(a)
6 0
3 years ago
if x stands for am number what is the mathematical phrase that represents three more than the number​
vlada-n [284]

Answer:

x + 3

Step-by-step explanation:

if x represents a number then 3 more than the number means addition of 3 to the number ( x )

so, required phrase is ;

=》x + 3

8 0
3 years ago
Read 2 more answers
2(4 – 16) – (–30) 2(–12) – (–30) 24 – (–30) 54
VLD [36.1K]

Step-by-step explanation:

2(4 – 16) – (–30) 2(–12) – (–30) 24 – (–30) 54= 2×4-2×16 -×-30×2×-12-×-30×24-×-30= 8-32+30-24+30×24+30: 732

3 0
4 years ago
Read 2 more answers
I'll give brainliest :)
nevsk [136]

Answer:

C

Step-by-step explanation:

In the equation y = -x - 4, the gradient is -1.

While in the second equation,

5x + 5y = 20

y = -x + 4

So the gradient is -1 too

Both sides are not perpendicular to each other because if you apply the formula, m1m2 = -1, and if substitute both gradient, (-1)(-1) = 1 ≠ -1

Therefore, no they are not perpendicular but parallel instead.

4 0
3 years ago
Simplify the expression-9(-8p+12)-6p
lana [24]

Answer:

219.345115

Step-by-step explanation:

-9(-8p+12)-6p

= 219.345115

6 0
3 years ago
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