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3 years ago

4/5 divided by 7/10 in fraction form help

Mathematics

1 answer:

PSYCHO15rus [73]3 years ago

3 0

Answer:

Divide 4/5 with 7/10

45 ÷ 710 is 87.

Step-by-step explanation:

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Evaluate the expression for a = 5, b = 11, and c = 3. 2a + 2c(b − 5) A. 64 B. 46 C. 54 D. 163

Artemon [7]

2a +2c(b-5)

substitute a=5 b=11 c=3

2(5) +2(3) (11-5)

10+6(6)

10+36

Choice B

8 0

3 years ago

If varies directly with y and x = 6 m when y = 15, find x when y = 20

GuDViN [60]

If x varies directly with y, then :

● Increase in x results in increase of y

● Decrease in x results in decrease of y

● It is represented by : x ∝ y

$\mathsf{\bigstar\;\;If\;x\;varies\;directly\;with\;y\;then : \large\boxed{\mathsf{\dfrac{x_1}{x_2} = \dfrac{y_1}{y_2}}}}$

Here : x₁ = 6 and y₁ = 15 and x₂ = x₂ and y₂ = 20

Substituting the values we get :

$\mathsf{\implies \dfrac{6}{x_2} = \dfrac{15}{20}}$

$\mathsf{\implies x_2 = \dfrac{20 \times 6}{15}}$

$\mathsf{\implies x_2 = 8}$

Answer : x = 8 when y = 20

8 0

3 years ago

Read 2 more answers

Hurry 50 points for correct answer

Ad libitum [116K]

Answer: "7 is a solution to the original equation. The value –1 is an extraneous solution."

Step-by-step explanation:

The equation $x=\sqrt{6x+7}$ can be solved by squaring both sides:

$x^2 = 6x + 7\\\\x^2 - 6x - 7 = 0\\\\(x-7)(x+1) = 0$

We can see that -1 and 7 are solutions, but make sure they are not extraneous by substituting them in the original equation:

$1 = \sqrt{-1}\\ 7 = \sqrt{49}$

The square root of 49 equals 7, but the square root of -1 is an imaginary number.

The correct choice is "7 is a solution to the original equation. The value –1 is an extraneous solution."

4 0

3 years ago

for a two week period, john and amanda had the following transactions occur to their cheking account: a deposit of $1,644.50;che

QveST [7]

a deposit of $1,644.50;checks written for $190, $45, and $7.50; and debit card transactions for $30, $5.59, $7.20, and $21.30.

amount deposited = 1644.50

debit card transactions for $30, $5.59, $7.20, and $21.30.

We add all the debit card transactions

30 + 5.59 + 7.20 + 21.30 =64.09

checks written for $190, $45, and $7.50

Add all the check written amounts

190 + 45 + 7.50=242.5

To find ending balance , we subtract the debit card transactions and check written from the deposit amount

1644.50 - 64.09 - 242.5 = 1337.91

$1,337.91 is the ending balance for this time frame

8 0

3 years ago

y is directly proportional to the positive square root of( x+2)² when x = 8 y= 250 find y when x = 4

gulaghasi [49]

Answer:

150

Step-by-step explanation:

Since y is directly proportional to sqrt((x+2)^2), there is a constant,k, such that

y=ksqrt((x+2)^2)

We are given a pair (x,y) in this relation. Let's plug in (8,250 ) to find k.

250=ksqrt((8+2)^2)

250=ksqrt((10)^2)

250=k10

250/10=k

25=k

So for any pair (x,y) we have the relation y=25((x+2)^2).

We are asked to find y when x=4.

y=25((4+2))^2

y=25(6)

y=150

Test to see if y is proportional to sqrt((x+2)^2)

For the given points: 250/150=10/6

The equation is true so we're great.

5 0

3 years ago