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diamong [38]
3 years ago
8

Solve for x* 4(x + 4) + 3 = 7

Mathematics
1 answer:
shtirl [24]3 years ago
7 0

Answer:-3

Step-by-step explanation:

-3 + 4= 1 • 4 = 4+ 3 = 7

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The value of y varies jointly with x and z. If y = 7 when z = 196 and x = 2, find the value of y when x = 3 and z = 336. I will
eimsori [14]

Answer:

18

Step-by-step explanation:

Given that:

y∞ xz

y=kxz. Where k is constant

When z=196 and x= 2 then y= 7

7=(196)(2)k

7=392k

k=1/56

There fore y=(1/56)xz

When x=3 and z =336

y=(1/56)xz

y=(1/56)(336)(3)

y=18

8 0
3 years ago
If using the method of completing the square to solve the quadratic equation x^2-4x+10=0,which number would have to be added to
chubhunter [2.5K]

Answer:

4

Step-by-step explanation:

Given

x² - 4x + 10 = 0

subtract 10 from both sides

x² - 4x = - 10

To complete the square

add ( half the coefficient of the x- term )² to both sides

x² + 2(- 2)x + 4 = - 10 + 4

(x - 2)² = - 6

To complete the square add 4

5 0
3 years ago
The dimensions of a rectangle are sqrt 50a^3b^3 and sqrt 200a^3
nignag [31]

Answer:

The student incorrectly simplified 10ab root 2a + 20a root 2a

Step-by-step explanation:

3 0
3 years ago
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Select the example which illustrates the distributive property of 7 × 39
Lemur [1.5K]

Answer:

d) 7(30 + 9) = 7(30) + 7(9)

Step-by-step explanation:

<u>Distributive method</u>:

  • a(b + c) = ab + ac

<u>Here given</u>:

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Among the option's:

<u>1st option</u> (7 + 3) (7 + 9) is wrong, changes <u>final answer</u>.

<u>2nd option</u> (7 × 30) + 9 is wrong, changes <u>final answer</u>.

3rd option 39 × 7 shows commutative property of multiplication.

<u>4th option</u> show distributive method.

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1 year ago
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