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antiseptic1488 [7]
3 years ago
7

Which of the following best describes the equation below?

Mathematics
1 answer:
Irina18 [472]3 years ago
5 0

Answer:

A

Step-by-step explanation:

BECAUSE THERE IS ONLI ONE VARIABLE

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Plz help hurry i don’t understand
attashe74 [19]
Answer- Option 2

I hope that helps
7 0
3 years ago
If the sum of the roots of the equation 3x² + kx + 1 = 0 is 7. then what the value of k​
koban [17]

Answer:

The value of k is -21

Step-by-step explanation:

ax² + bx + c = 0

Sum of the roots = -b/a

3x² + kx + 1 = 0

= sum of the roots = -k/3

-k/3 = 7

Now, Multiply both side by (-3) we get,

(-3)-k/3 = 7(-3)

k = -21

Thus, The value of k is -21

<u>-TheUnknownScientist</u><u> 72</u>

7 0
2 years ago
Samuel earned $18.90 working last weekend. He worked for 2 hours. Which equation and
MariettaO [177]

Answer:

A)18.90 = 2.25e

Samuel earns $8.40 per hour.

7 0
3 years ago
I need help pleaaseeeee
Bond [772]

Answer:

x=3

Step-by-step explanation:

Because the shape is a rhombus that means that WZ and XY are parallel

This means we can use the co-interior angles rule to conclude that ∠WZY and ∠XYZ add up to 180°

This means that ∠WZY is 44°

Because the shape in a rhombus ZX and WY are perpendicular

This means that ∠ZRY is a right angle (90°)

Because ZX and WY are perpendicular that means that ∠ZYX is split in half which makes ∠ZYW 68°

Because the angles in a triangle add up to 180°

(10x-8)+68+90=180

(10x-8)+158-158=180-158

10x-8+=22+8

10x/10=30/10

x=3

6 0
2 years ago
Andrew has a salary of £250. He shares his salary with his sister in the ratio 2:3 every week. He saves 12% each week. How many
exis [7]
A = Andrew
S = Sister

A : S
2 : 3
2 + 3 = 5
250 ÷ 5 = 50
2 × 50 = 100
3 × 50 = 150

∴ A : S
   100 : 150
So Andrew keeps £100 of his salary every week.

Of this, he saves 12%:
100 × (12 ÷ 100) = 12
So he saves £12 every week

360 ÷ 12 = 30
∴ it will take him 30 weeks to save £360.
6 0
3 years ago
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