3 years ago

Evaluate the expression when x = 1/4 and y = 8 3xy

Mathematics

1 answer:

Blizzard [7]3 years ago

8 0

6 because 3 times 1/4 is 0.75 and 0.75 times 8 is 6

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The French Club ordered 16 pizzas for a party. Each pizza had 6 slices. Jose ate 7 of the slices. How many slices were left for

NikAS [45]

16 x 6 = 96
96 - 7 = 89
or
14 pizzas and 5 slices

Answer : 89 slices

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3 years ago

three times the sum of a number x and 3 is 10 plus twice the difference of the number x and another number y

Nadya [2.5K]

Step-by-step explanation:

We have 3(x + 3) = 10 + 2(x - y).

=> 3x + 9 = 10 + 2x - y

=> x = 1 - y

=> y = 1 - x.

(Rewritting it as a mathematical statement is the 1st line)

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3 years ago

What would be the least amount of money needed to purchase exactly 19 muffins?

Lady bird [3.3K]

B: 9.25

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2 years ago

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Imagine you are teaching a younger student how to factor. Describe in full sentences what you would say to teach the young stude

djyliett [7]

Answer:

$x^2+ 4x - 21$ =(x-3)(x+7)

Step-by-step explanation:

To factor the trimonial: $x^2+ 4x - 21$ , we follow these steps:

Step 1: Multiply the first and last term

$-21 \times x^2=-21x^2$

Step 2: List out product factors of the term derived above

$-21=-1 \times 21\\ -21=-3 \times 7\\-21=3 \times -7\\-21=1 \times -21$

Step 3: Determine which of the factors sum up to the middle term 4x

The required product is: -3 and 7

Therefore: -3x+7x=4x

Step 4: Replace the middle term by the expression derived in step 3 and factorize.

$x^2+ 7x -3x- 21\\=x(x+7)-3(x+7)\\=(x-3)(x+7)$

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3 years ago

Which expression gives the best estimate of the product of 281 x 2.16?

vagabundo [1.1K]

Answer:

Step-by-step explanation:

281 rounds up to 300

2.16 rounds down to 2

300*2=600

so 600 is your estimate

8 0

3 years ago

Read 2 more answers