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erma4kov [3.2K]
2 years ago
8

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

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

nevsk [136]2 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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OLEGan [10]
She needs 96 inches of lace because 4 x 24 is 96.
7 0
3 years ago
Find two consecutive integers whose product is 50
GarryVolchara [31]

n, n+1 - two consecutive integers

n(n + 1) = 50     <em>use distributive property</em>

n² + n = 50     <em>subtract 50 from both sides</em>

n² + n - 50 = 0

-----------------------------------------------------

ax² + bx + c =0

if b² - 4ac > 0 then we have two solutions:

[-b - √(b² - 4ac)]/2a and [-b - √(b² + 4ac)]/2a

if b² - 4ac = 0 then we have one solution -b/2a

if  b² - 4ac < 0 then no real solution

----------------------------------------------------------

n² + n - 50 = 0

a = 1, b = 1, c = -50

b² - 4ac = 1² - 4(1)(-50) = 1 + 200 = 201 > 0 → two solutions

√(b² - 4ac) = √(201) - it's the irrational number

Answer: There are no two consecutive integers whose product is 50.

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3 years ago
1. Name the angle below in four ways. Then classify it as acute, right, obruse, or straight.
Yanka [14]

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Ok so I know the angle is acute

Step-by-step explanation:

because the angle looks smaller than a 90 degree angle...

7 0
2 years ago
Which best describes the accuracy of Jill’s solution? Jill’s solution is accurate. Jill omitted a factor pair, which affected th
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Read 2 more answers
Three points that are not collinear determine three lines. How many lines are determined by nine points, no three of which are c
Drupady [299]

Answer:

Use the method for solving Bernoulli equations to solve the following differential equation.

StartFraction dy Over dx EndFraction plus StartFraction y Over x minus 9 EndFraction equals 5 (x minus 9 )y Superscript one half

Step-by-step explanation:

Use the method for solving Bernoulli equations to solve the following differential equation.

StartFraction dy Over dx EndFraction plus StartFraction y Over x minus 9 EndFraction equals 5 (x minus 9 )y Superscript one half

4 0
3 years ago
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