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S_A_V [24]
3 years ago
14

3a^2-7a+6= ( for a= -2 )

Mathematics
2 answers:
kenny6666 [7]3 years ago
8 0

Answer:

32

Step-by-step explanation:

a^2=4

3*4=12

3a^2=12

7a= -14

-7a=14

6=6

12+14+6=32

DENIUS [597]3 years ago
3 0

Answer:

32

Step-by-step explanation:

Substitute a = - 2 into the expression and evaluate

3(- 2)² - 7(- 2) + 6 = 3(4) + 14 + 6 = 12 + 14 + 6 = 32

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Scorpion4ik [409]
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3 years ago
If a dress costs $27,000 when it is on sale for 10% off, what is its original cost?
Ede4ka [16]

Answer:

30,000

Step-by-step explanation:

10% of 30,000 is 3,000

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4 0
3 years ago
Liz and Rick are squeezing lemons for a lemonade stand. Liz squeezed 18 lemons in 6 minutes. Rick squeezed 24 lemons in 12 minut
qwelly [4]
Liz squeezed lemons faster. Liz squeezed 18 lemons in 6 minutes. To find out how many she squeezed in a minute, you would do 18 / 6, which gives you three. Rick squeezed 24 lemons in 12 minutes. To find out how many lemons he squeezed in a minute, you would do 24/12, which gives you 2. So, Liz squeezed 3 lemons per minute while Rick squeezed 2 lemons per minute.
6 0
3 years ago
Whoever gets it right gets brainlyess answer and it's worth 10 points
defon
There are 8 yellow and 24 blue. Our ratio from yellow to blue is 8:24.
To simplify this, we need to see if we can divide 8 and 24 by a common factor.
8 and 24 can be divided by 8, so let's do that.
8/8 = 1.
24/8 = 3.
Your new and simplified ratio is 1:3 from yellow to blue, but we're looking for blue to yellow. Flip the ratio.
3:1 is your ratio.
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6 0
3 years ago
Read 2 more answers
A man tied a rope to the top of a tree, which is 'x' m tall. The other end of the rope was tied to
Monica [59]

Answer:

(x+16)^2=20^2+x^2

Step-by-step explanation:

Given there was no bending of the tree, the Pitagorean Theory would help finding the value of the trees hight.

x^2+32x+16^2=400+x^2

32x=(20-16)×(20+16)

x=144/32

x=4m and 50cm

4 0
4 years ago
Read 2 more answers
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