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m_a_m_a [10]
2 years ago
7

Wich expression is equivalent to 5(6x+3y) A11x+3yB.11x+8yC.3x+3yD.30x+15y

Mathematics
2 answers:
ehidna [41]2 years ago
8 0
D.30x+15y please help with me thanks. C:
alexandr402 [8]2 years ago
3 0
Hello!

We can solve this problem using the Distributive Property, which states the following:

a(b + c) = ab + ac
a(b – c) = ab – ac

In this case, we’ll use the first of the two formulas. Insert any known values into the equation as follows:

a(b + c) = ab + ac
5(6x + 3y) = 5(6x) + 5(3y)

Now simplify the right side of the equation:

5(6x + 3y) = 30x + 15y

We have now proven the given expression to equal (30x + 15y).

Consequently, the correct answer is D.

I hope this helps!
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Teresa earned scores of 88, 84, 88 points and 91 points on 4 test what is the lowest score she can get on the fifth test and sti
Usimov [2.4K]

Answer:

99 points

Step-by-step explanation:

Average of a data a is the sum of the data divided by the number of data.

Average = sum of data ÷ number of data

A = T/n .....1

For the average of 5 test to be 90.

The total sum of score must be;

Number of tests n = 5

Average A = 90

Substituting into equation 1

90 = T/5

T = 90×5 = 450 points

The total score must be equal to 450 point to have an average of 90 points

The sum of the first four test is;

88+84+88+91 = 351

Let x represent the first score,

351 + x = 450

x = 450 - 351

x = 99 points

The minimum score she can get in the fifth test is 99 points

5 0
3 years ago
- The water level of a lake fell by 13 inches during
bezimeni [28]

Answer:

r = - 13 / 15 inches/week

Step-by-step explanation:

The numerator is 13

and the denominator is 15, then we have

r = - 13 / 15 inches/week

r < 0 since the water level of the lake fell

6 0
3 years ago
the actual length of wall c is 4 m . to represent wall c noah draw a segment 16cm long what scale is he using explain your reaso
Gnoma [55]

Answer:

1/25

Step-by-step explanation:

1 m = 100 cm

4m x 100 = 400 cm

If it is 16 cm long, then the scale factor is 16/400, which simplifies to 1/25.

7 0
2 years ago
The food bank has 1774.4 oz of chicken.If 12.6 oz is 2 servings,how many servings of chicken does this provide?
diamong [38]

Answer:

281 servings

Step-by-step explanation:

From the table attached,

We will apply the unitary method to solve this problem.

∵ 12.6 oz of chicken represents number of servings = 2

∴ 1 oz of chicken will represents number of servings = \frac{2}{12.6}

∴ 1774.4 oz of chicken will make the total servings = \frac{2}{12.6}\times 1774.4

                                                                                    = 281.65

                                                                                    ≈ 281 servings

Therefore, total number of servings provided = 281

6 0
3 years ago
HELP, I’M STUCK !
vaieri [72.5K]

Since P(<em>X</em> = <em>x</em>) = 0.3 for all 0 ≤ <em>x</em> ≤ <em>α</em>, we have

\displaystyle\int_{-\infty}^\infty P(X=x)\,\mathrm dx=1\implies0.3\int_0^\alpha\mathrm dx=0.3\alpha=1\implies\alpha=\dfrac{10}3

So,

P(X>2) = \displaystyle\int_2^\infty P(X=x)\,\mathrm dx=0.3\int_2^{\frac{10}3}\mathrm dx

P(X>2)=0.3\left(\dfrac{10}3-2\right)=\boxed{\dfrac25}

6 0
2 years ago
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