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Nitella [24]
3 years ago
11

If f(x)=(2x)^2 find f(-4)

Mathematics
1 answer:
Reptile [31]3 years ago
5 0

Answer:

64

Step-by-step explanation:
1. Plug it in:

(2(-4))^2

2 times -4 is -8

(-8)^2 = 64

So there’s your answer

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Help me with this!! Will mark Brainliest
Basile [38]

Answer:

JL is not congruent to KM

Step-by-step explanation:

The length of JL is 23-21 = 2.

The length of KM is 25-22 = 3

So, because the lengths are not equal,

JL is not congruent to KM

4 0
3 years ago
A confidence interval is constructed for an unknown population proportion, p. A sample is collected, and the 95% confidence inte
Musya8 [376]

Answer: The population proportion is between 0.34 and 0.46 .

Step-by-step explanation:

Interpretation of 95% confidence interval : A person can be about 95% confident that the true population parameter lies in the interval.

A confidence interval is constructed for an unknown population proportion, p. A sample is collected, and the 95% confidence interval is calculated to be 0.40 ± 0.06.

i.e. Lower limit = 0.40-0.06=0.34

Upper limit =  0.40+0.06=0.46

i.e. 95% confidence interval = (0.34, 0.46)

i.e. A person can be about 95% confident that the true population proportion (p) lies in the interval  (0.34, 0.46).

⇒ It is most accurate to say that there is approximately 95% confidence in the assertion that:

The population proportion is between 0.34 and 0.46 .

6 0
3 years ago
2x + y = 7<br> -2x - y = 6<br> Solve systems of equations by substitution
ehidna [41]

Answer:

No solution.

Step-by-step explanation:

2x + y = 7

-2x - y = 6

From the first equation:

y = 7 - 2x

Plug this into the second equation:

-2x - (7 - 2x) = 6

-2x  + 2x = 6 + 7

0 = 13

this doesn't make sense so theer is:

No solution.

4 0
3 years ago
-5–(-6)<br> Show work pls Nd simplify
zubka84 [21]

Answer:

Step-by-step explanation:

Here you go mate

Step 1

-5-(-6)  Equation/Question

Step 2

-5-(-6)  Simplify

5-6

Step 3

5-6  Subtract them

Answer

1

Hope this helps

7 0
3 years ago
Read 2 more answers
mjcaela and julia each improved their yards by planting daylilies and shrubs. they bought their supplies from the same store. mi
evablogger [386]

Answer:

The cost of one day lily = $ 11,

The cost of one shrub = $ 2.

Step-by-step explanation:

Let x be the cost of one day lily and b be the cost of one shrub,

Michaela spent $148 in 12 day lilies and 8 shrubs.

⇒ 12 x + 8 y = 148

⇒ 3 x + 2 y = 37 ----------(1)

While, Julia spent $92 on 6 day lilies and 13 shrubs.

⇒ 6 x + 13 y = 92 --------(2)

2 × Equation (1),

⇒ 6 x + 4 y = 74  --------(3)

Equation (2) - Equation (3),

9 y = 18

⇒ y = 2

By substituting this value in equation (1),

⇒ 3 x + 4 = 37

⇒ 3 x = 33

⇒ x = 11

Hence, the cost of one day lily = x =  $ 11

And, the cost of one shrub = y = $ 2

5 0
3 years ago
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