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erma4kov [3.2K]
3 years ago
8

8a + 5b = 9; 3a + 2b = 4

Mathematics
2 answers:
Marianna [84]3 years ago
7 0
This the the awnser for this

nevsk [136]3 years ago
4 0

Solve for the first variable in one of the equations, then substitute the result into the other equation.
a
=
−
2
,
b
=
5
a
=
-
2
,
b
=
5
T
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In a random sample of 1,000 exams, the average score was 500 points with a standard deviation of 80 points.
bagirrra123 [75]
90% c.I. is given by







5 0
2 years ago
Refer to the figure. Barton Road and Olive Tree Lane
Fantom [35]

Angles at right-angle add up to 90 degrees

The measure of acute angle Tryon Street forms with Barton Road is <em>33 degrees</em>

The angle is given as:

\mathbf{A = 57^o} ---- <em>Angle formed by Tryon Street with Olive Tree Lane. </em>

The measure of the acute angle formed by Tryon Street with Barton Road (B) is calculated using:

\mathbf{A + B = 90} ---- angle at right-angle

Make B the subject

\mathbf{B = 90 - A}

Substitute 57 for A

\mathbf{B = 90 - 57}

\mathbf{B = 33}

Hence, the measure of acute angle is 33 degrees

Read more about acute angles at:

brainly.com/question/10334248

3 0
2 years ago
Annabella Works in a deli and has been tracking the daily sales of different items over several months Annabelle found that when
Pepsi [2]
What are the conclusions?
I would assume that even though both hot chocolate and coffee increased and decreased at the same time, they are not a correlation since one doesn’t cause the other to increase/decrease
7 0
2 years ago
Read 2 more answers
PLEASE HELP ADSAPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPP!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
Rasek [7]

Answer:

Part A: (0.25+0.30+0.75) - 0.20

Part B:

Step-by-step explanation:

The jar contains 0.25 of apple juice and 0.30 liter of grape juice. Then, another 0.75 litter is added. Melissa drank 0.20 of that, making the value lower (Hint: subtraction).

So we have to add 0.25, 0.30, and 0.75. Subtract it by 0.20. My equation would look like:

(0.25+0.30+0.75) - 0.20

The simplified equation will be:

1.3 - 0.20

= 1.1

I used the associative property to simplify the parenthesed part of the equation, and subtracted it by 1.1. Even though it has been simplified, the result has no changed and it is still the same value as it would have been in the previous equation.

Best of luck, and have a blessed day! For any question or comments, please say so!

4 0
3 years ago
Read 2 more answers
12.15x19 Need this asap thanks yall have a blessed day :)
valentinak56 [21]

Answer:

The answer would be 230.85

5 0
2 years ago
Read 2 more answers
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