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zubka84 [21]
3 years ago
5

I need help fast please

Mathematics
2 answers:
loris [4]3 years ago
8 0
I think the answer be C? Sorry if it's wrong
levacccp [35]3 years ago
5 0

Answer:

it's

answer D

Step-by-step explanation:

5.0 \times 10 ^{ - 4}  - 3.0 \times  {10}^{ - 5}  \\ 0.0005 - 0.00003 \\  = 0.00047 = 4.7 \times  {10}^{ - 4}

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What is one value of x that makes the equation-16x^2+121=0 true
jeyben [28]

Answer:

x = ±11/4

Step-by-step explanation:

Rewrite -16x^2+121=0 as 16x^2 - 121=0 and then as 16x^2 = 121.

Take the square root of both sides.  This returns 4x = ±11, and so:

x = ±11/4

8 0
3 years ago
The width of a singles tennis court is 75% of the width of a doubles court. A doubles court Is 36 feet wide. How wide is a singl
yuradex [85]

Answer:

width of a singles court = 27 feet

Step-by-step explanation:

Width of a doubles tennis court = 36 feet

Width of a singles tennis court = 75% of 36

width = 75\% \times 36 \\ width =  \frac{75}{100}  \times 36 \\ width =  \frac{3} {4}  \times 36 \\ width =  \frac{108}{4}  = 27

8 0
3 years ago
Kate prepared 9 kilograms of dough after working 3 hours. How many hours did Kate work if she prepared 12 kilograms of dough? As
beks73 [17]

Answer:

4 hours

Step-by-step explanation:

cross multiply

3 0
3 years ago
What expression is equivalent to -3+2/3y-4-1/3y
ryzh [129]

Answer: -7 + y/3

Step-by-step explanation:

8 0
3 years ago
For every 144 light bulbs produced, 6 are defective. Find the number of defective light bulbs that could be expected out of 720.
Lelu [443]
You are going to get the rate of the detects.
6 detects ÷ 114 light bulbs = 1/19 detects per light bulb

If there are 720 light bulbs, then the number of detects will be
720 light bulbs * 1/19 detects per light bulb = 37. 89 ≈ 38 detects
7 0
3 years ago
Read 2 more answers
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