2 years ago

Help me plz this test is hard

Mathematics

1 answer:

kenny6666 [7]2 years ago

7 0

Answer:

B I think

Step-by-step explanation:

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What is the answer ?

Softa [21]

Answer:

353

Step-by-step explanation:

355-42=x-40

I just need to subtract 2 from 355 to get x because I subtracted 2 from 42 to get 40.

355-2=353=x

8 0

3 years ago

Read 2 more answers

What is 1/9 - 2 4/9 - 5/9

Ymorist [56]

1/9-22/9-5/9
-21/9-5/9
-26/9

3 0

3 years ago

Read 2 more answers

The value of y varies directly with x. If x =3, then y=21. What is the value of x when y=105?

Goshia [24]

Answer:

x = 15

Step-by-step explanation:

given that y varies directly with x

mathematically we can express this as

y = k x , where k is a constant

step 1: find k

given x = 3 and y = 21

y = k x

21 = k (3)

k = 7

hence the equation becomes

y = 7 x

when y = 105,

105 = 7x

x = 105 / 7 = 15

3 0

3 years ago

Maggie needs to spend at least six hours each week practicing the piano. She has already practiced three and one fourth hours th

vfiekz [6]

Answer:

three and one fourth + 2x ≥ 6

Step-by-step explanation:

Let

x -----> the minimum number of hours he needs to practice on each of the two days

we know that

needs to spend at least seven hours each week practicing the drums

$3\frac{1}{4}+2x\geq 6\ hours$

Convert mixed number to an improper fraction

$3\frac{1}{4}\ hours=\frac{3*4+1}{4}=\frac{13}{4}\ hours$

substitute

$\frac{13}{4}+2x\geq 6\ hours$

Subtract 13/4 both sides

$2x\geq 6-\frac{13}{4}$

$2x\geq \frac{11}{4}$

Divide by 2 both sides

$x\geq \frac{11}{8}$

therefore

The minimum number of hours he needs to practice on each of the two days is $\frac{11}{8}\ hours$

5 0

3 years ago

You randomly draw a marble from a bag, record its color, and then replace it. You draw a red marble

andre [41]

Make it a fraction
7/25 * 4/4 = 28/100
0.28 = 28 percent

There is a 28 percent chance the next marble will be red

5 0

3 years ago