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xz_007 [3.2K]
3 years ago
7

Given that s ⊥ t and r ⊥ t, what conclusion can be made?

Mathematics
1 answer:
LenaWriter [7]3 years ago
3 0

Answer:

B

Step-by-step explanation:

It is B

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Is πxy=4 a linear equation?
Darya [45]

Answer:

Yes

Step-by-step explanation:

It is a first-degree equation. Look at the exponents of each variable (x, y), they are not written because they are 1

Hope this helps

3 0
2 years ago
Write 825 million in scientific notation.<br> please show your work
True [87]

Answer:

8.5*10^7

Step-by-step explanation:

825 million is

825,000,000

so you need to do 8.25 and then 10 to the power of 8

so the answer is 8.5*10^8

5 0
2 years ago
Please help me with this question!
gavmur [86]
First off, let's convert the percentages to decimal format, so our 77% turns to 77/100 or 0.77, and our 55% turns to 55/100 or 0.55 and so on

now, the sum of both salines, must add up to the 77% mixture, let's say is "y"
so, 11 + 4 = y, and whatever the concentration level is, must also sum up to the mixture's concentration of 77%

anyway   thus

\bf \begin{array}{lccclll}&#10;&amount&concentration&&#10;\begin{array}{llll}&#10;concentrated\\&#10;amount&#10;\end{array}\\&#10;&-----&-------&-------\\&#10;\textit{first sol'n}&11&x&11x\\&#10;\textit{second sol'n}&4&0.55&2.20\\&#10;------&-----&-------&-------\\&#10;mixture&y&0.77&0.77y&#10;\end{array}\\\\&#10;-------------------------------\\\\&#10;\begin{cases}&#10;11+4=y\implies 15=\boxed{y}\\&#10;11x+2.2=0.77y\\&#10;----------\\&#10;11x+2.2=0.77\cdot \boxed{15}&#10;\end{cases}

solve for "x"
6 0
3 years ago
A sample is random sample is valid
wlad13 [49]
If the sample is random, it is not valid.
8 0
3 years ago
Read 2 more answers
The scale on a map shows that 10 kilometers is represented by 4 centimeters. Which proportion can be used to find the actual dis
Illusion [34]
10/4=x/20
Your answer will be x=50 kilometers
3 0
3 years ago
Read 2 more answers
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