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Natasha2012 [34]

1 year ago

15

HELP PLEASE! I need the answer please!

1 answer:

cestrela7 [59]1 year ago

7 0

Answer:

The triangles are similar in that the smaller triangle was dilated by a scale factor of 1/4 which means that the length of the missing side is 20m

Step-by-step explanation:

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Find z such that 7.5% of the standard normal curve lies to the left of z.

sergeinik [125]

A probability of 0.075 corresponds to a z-score of about $z\approx-1.44$ , i.e.

$\mathbb P(Z$

3 0

2 years ago

Solve 5r2 – 12 = 68. {±4} {±5} {±3} {±6}

sashaice [31]

Hey there!

Assuming you meant

$5r^2 - 12 = 68$

If so, follow these steps so it can be a little bit easier to solve

Firstly, we have to $add$ by $12$ on each of your sides

$5r^2 -12 +12 \\ \\ 68 + 12$

$5r^2 = 5r^2 \\ \\ 68 + 12 = 80$

We get: $5r^2 =80$

Now, we have $divide$ by $5$ on each of your sides

$\frac{5r^2}{5} = \frac{80}{5}$

$\frac{80}{5} = 16$

We get: $r^2 = 16$

$r =$ ± $\sqrt{16}$

Therefore , your answer is: $r =$ ± $4$

Good luck on your assignment and enjoy your day!

~ $LoveYourselfFirst:)$

3 0

2 years ago

4. Amachine can make 88 pens in an 8 minute time pened How many pens cani make in a minute time period Answer

Bad White [126]

11 pens per minute .

5 0

2 years ago

Read 2 more answers

Help me plz thanks my friend

NikAS [45]

Answer:

I believe the answer would be 21.

Step-by-step explanation:

the shadow of the tall flag is three times the small flag, so the height of the flag should also be three times the height. which is 21

6 0

2 years ago

Find the sum of 4x^{2} -4+6 and -7^{2} +3x+1

denpristay [2]

Answer: 4x² + 3x + 52

Step-by-step explanation:

1. rearrange & simplify terms:

(4x² - 4 + 6) + (3x - 7² + 1) . . .

(4x² + 2) + (3x + 49 + 1) . . .

(4x²+2) + (3x + 50).

2. combine like terms in standard form:

<u>4x² + 3x + 52</u>

4 0

3 years ago