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3 years ago

Sally is 3 years younger than Ralph. What equation represents this relationship?

Mathematics

1 answer:

Fiesta28 [93]3 years ago

3 0

The correct answer is D.
Sally is 3 years younger than Ralph therefore S=R-3 which means Sally is Ralph’s age minus 3.

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5k-7=-7 solve the equation to what is k

LenKa [72]

So 5k-7=-7
You need to do the opposite of addition,which is subtraction so...
5k-7=-7
+7
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K=0
and to double check it,replace the (or variable) with our answer (0)...
so
5×0-7=-7
solve the problem...and
-7=-7√

5 0

3 years ago

Read 2 more answers

I need help. Can someine pkease help me? N+2=13

Dvinal [7]

N + 2 = 13
-2 -2
n = 11

I hope this helps!

7 0

2 years ago

Yuri thinks that 3/4 is a root of the following function. q(x) = 6x3 + 19x2 – 15x – 28 Explain to Yuri why 3/4 cannot be a root.

k0ka [10]

Answer:

Yuri is not correct.

Step-by-step explanation:

Given expression is q(x) = 6x³ + 19x² - 15x - 28

If 'a' is a root of the given function, then by substituting x = a in the expression, q(a) = 0

Similarly, for x = $\frac{3}{4}$ ,

$q(\frac{3}{4})=6(\frac{3}{4})^3+19(\frac{3}{4})^2-15(\frac{3}{4})-28$

= $6(\frac{27}{64})+19(\frac{9}{16})-15(\frac{3}{4})-28$

= $(\frac{162}{64})+(\frac{171}{16})-(\frac{45}{4})-28$

= $(\frac{162}{64})+(\frac{684}{64})-(\frac{720}{64})-\frac{1792}{64}$

= $-\frac{1666}{64}$

= $-\frac{833}{32}$ ≠ 0

Therefore, Yuri is not correct. x = $\frac{3}{4}$ can not be a root of the given expression.

6 0

3 years ago

Read 2 more answers

2 + 10 = 24 3 + 6 = 27 7 + 2 = 63 5 + 3 = ????

True [87]

Answer:

40

Step-by-step explanation:

2 + 10 = 24

2(2 + 10) = 2×12 = 24

3 + 6 = 27

3(3 + 6) = 3×9 = 27

7 + 2 = 63

7(7 + 2) = 7×9 = 63

5 + 3 = 40

5(5 + 3) = 5×8 = 40

7 0

3 years ago

The area of a triangle is 18 square feet. If the base is 3 feet, what is the height of the triangle? no pic

Leya [2.2K]

Answer:

Im pretty sure the height of triangle would be 6

Step-by-step explanation:

5 0

2 years ago