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nika2105 [10]
3 years ago
15

Evaluate f (x) = -4x + 7 when x = 2 and x = -2

Mathematics
1 answer:
sineoko [7]3 years ago
6 0

Answer:

- 1 and 15

Step-by-step explanation:

Substitute x = 2 and x = - 2 into f(x)

f(2) = - 4(2) + 7 = - 8 + 7 = - 1

f(- 2) = - 4(- 2) + 7 = 8 + 7 = 15

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A recipe for cookies requires 2/3 cup of butter. Raheim wants to make 3/4 of the recipe. How many cups of butter should Raheim u
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When you only want to make a fraction of a recipe, say like 1/2, you multiply that fraction by every measurement of an ingredient.

So, if a recipe calls for 2 cups of flour, you multiply the measurement of that ingredient by the fraction. In our case 1/2.

2 * 1/2 = 2/2 = 1

Now we need to only put 1 cup of flour.

Same difference with the question above. Raheim only wants 3/4 of the recipe. So, we multiply 3/4 by the measurement of every ingredient.

One of the ingredients is butter. In the original recipe, it is 2/3 of a cup.

Now we multiply 2/3 by 3/4.

2/3 * 3/4 = 6/12

Simplify the fraction.

6/12 = 1/2

So, Raheim should use 1/2 of a cup of butter.
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3 years ago
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Answer:

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157 29 Marks
AlekseyPX

Complete question :

Put these fraction in order of size smallest to largest : 7/10, 2/3, 4/5, 11/15

Answer:

2/3, 7/10, 11/ 15, 4 /5

Step-by-step explanation:

In other to make solving the question easier, we can convert the fractions to decimal in other to make comparison easier :

7/10 = 0.7

2/3 = 0.667

4 /5 = 0.8

11 /15 = 0.733

Using the placement or how the numbers will appear to the right of a number line ;

0.667, 0.7, 0.733, 0.8

Thus we have :

2/3, 7/10, 11/ 15, 4 /5

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