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Margaret [11]
3 years ago
7

Michael is using a number line to evaluate the expression –8 – 3. A number line going from negative 12 to positive 12. A point i

s at negative 8. After locating –8 on the number line, which step could Michael complete to evaluate the expression?
Mathematics
1 answer:
Nata [24]3 years ago
6 0

Answer:

move to the left 3 more spaces

Step-by-step explanation:

you are at -8 already. Therefore, you (-3) more spaces, so you go to the left three more spaces. Use the saying keep change change to help with this.

Keep the first number sign, change the next sign, and the next sign.

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Please help me!!!! I need to hand it in rn!!
Maurinko [17]

Answer:

12

Step-by-step explanation:

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8 0
3 years ago
. Campbell's paycheck was $257.20. She put 1/4 of her paycheck in her savings account and used 1/3 of what was left to pay bills
evablogger [386]
I could be wrong because people do make mistakes, but i’m pretty sure the answer i got was right
$128.60
explanation:
$257.20 divided by 4=$64.30
$257.20-$64.30=$192.90
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$192.90-$64.30=$128.60
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5 0
3 years ago
Use the discriminant to describe the roots of each equation. Then select the best description. x^2 + 9x + 14 = 0
NISA [10]

B

given a quadratic equation in standard form

ax² + bx + c = 0

Then we can describe the nature of the roots using the discriminant

Δ = b² - 4ac

• if b² - 4ac > 0, then 2 real, distinct and irrational roots

• if b² - 4ac > 0 and a perfect square, then real and rational roots

• if b² - 4ac = 0, then real and equal roots

• if b² - 4ac < 0, then roots are not real

for x² + 9x + 14 = 0

with a = 1, b= 9 and c = 14, then

b² - 4ac = 9² - (4 × 1 × 14 ) = 81 - 56 = 25

Since b² - 4ac > 0 and a perfect square, then roots are real and rational


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sergejj [24]
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Answer:

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Step-by-step explanation:

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3 years ago
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