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Anna71 [15]
3 years ago
14

Help me please I need it!!

Mathematics
2 answers:
OlgaM077 [116]3 years ago
6 0
The answer is 5. 5 is the answer
Inessa05 [86]3 years ago
5 0

Answer:

5

Step-by-step explanation:

f(-4) = sqrt(2(4)^2 -7) (Plug in -4)

f(-4)= sqrt(2(16)-7) (Square 4 which is 16)

f(-4)=sqrt(32-7) (Multiply by 2)

f(-4)=sqrt(25) (Subtract 7)

f(-4)=+/- 5 (take the square root of 25 which is postive/negative 5)

Since this is a function there can only be one y to an x the positive 5 is the only answer

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S=4LW+2WH S=136 L=7 W=4. what is h?
Bingel [31]

Answer:

<h2>H = 3</h2>

Step-by-step explanation:

S=4LW+2WH\\\\\text{We have}\ S=136,\ L=7,\ W=4.\ \text{Substitute:}\\\\136=4(7)(4)+2(4)H\\\\136=112+8H\qquad\text{subtract 112 from both sides}\\\\24=8H\qquad\text{divide both sides by 8}\\\\3=H\to H=3

4 0
3 years ago
Read 2 more answers
Factor: 28k^3-24k^2+49k-42<br><br> I will give Brainliest to the first person :)
serious [3.7K]

Answer:

(4k^2+7)(7k+6)

Step-by-step explanation:

1. group the first two terms (28k^3-24k^2). The greatest common factor is 4k^2. If you factor that out you get 4k^2(7k-6)

2.When you group the last two terms (49k-42). you can factor out a 7.

7(7k-6).

3. There is a (7k-6) in both sections so you can combine all the terms.

4k^2(7k-6) 7(7k-6) becomes (4k^2)(7k-6)

7 0
3 years ago
Use the following figure to answer the questions. Isosceles trapezoids ABCD and WXYZ are similar to each other.
vodka [1.7K]

The true statements are : A, E & F

Step-by-step explanation:

In geometry symbols, ≅ means congruent to, equivalence of geometric shapes and size thus ∠B≅∠X

The symbol ~ means similarity, same shape not same size. Line segment AB~WX and line segment ZW ~ DA

Learn More

similarity :brainly.com/question/1812128

Keywords :statements, true, similar, isosceles trapezoids

#LearnwithBrainly

8 0
4 years ago
Alberta Doan worked 6 hours at time-and-a-half pay and 3 ¼ hours at double-time pay. Her regular pay rate was $9.72 an hour. Wha
rewona [7]

Answer:

29.22

Step-by-step explanation:

6x3/1/4+9.72

5 0
3 years ago
Please help. 20 points...........
Eva8 [605]
ANSWER

The answer is 7.5
3 0
3 years ago
Read 2 more answers
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