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Luden [163]
4 years ago
13

Which steps could be part of the process in algebraically solving the system of equations, y + 5x = x2 + 10 and y = 4x –

Mathematics
1 answer:
mafiozo [28]4 years ago
3 0

Answer:

0 = x2 - 9x + 20

Step-by-step explanation:

y + 5x = x² + 10     Simplify this equation

  - 5x   - 5x

y = x² - 5x + 10

Set both equations equal to each other since they both equal y

x² - 5x + 10 = 4x - 10

    -4x           - 4x

x² - 9x + 10 = -10

         + 10   + 10

x² - 9x + 20 = 0

If this answer is correct, please make me Brainliest!

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Dante’s chocolate bar is 36% cocoa. If the weight of the chocolate bar is 73 grams, how many grams of cocoa does it contain roun
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Answer:

26.3 grams

Step-by-step explanation:

36% = 36/100 = 0.36

73 * 0.36 = 26.28 grams ≈ 26.3 grams

5 0
3 years ago
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For which shape is 180 degrees the smallest angle of rotational symmetry?
Anit [1.1K]

Answer:

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Step-by-step explanation:

5 0
3 years ago
XxY=100<br> What is X and Y
Dvinal [7]

Answer:

X could be 50 and Y could be 2 or vice versa. X and Y can also be 10.

Step-by-step explanation:

7 0
3 years ago
Find a quadratic function that includes the set of values below.
Mariana [72]

Answer:

f(x) = -3x^2 + 10x + 3

Step-by-step explanation:

(0,3) (2,11)(3,6)

Using the form ax^2 + bx + c = y

From the first set we know that c = 3

Write an equation for the last two sets

x=2; y=11

a(2^2) + b(2) + 3 = 11

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simplify divide by 2

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and

x=3, y=6

9a + 3b + 3 = 6

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simplify divide by 3

3a + b = 1

:

Use elimination to find a

3a + b = 1

2a + b = 4

--------------subtracting eliminate b

a = -3

Find b using the equation 2a + b = 4

2(-3) + b = 4

b = 4 + 6

b = 10

:

The equation: f(x) = -3x^2 + 10x + 3

8 0
3 years ago
I really need help it’s slope and I’m very confused
abruzzese [7]
Slope formula is y=mx+b so m is the slope and b is the y-int all u do is replace the numbers with the letters and they give u the formula which would be y=-8x-3
4 0
3 years ago
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