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2 years ago

Help me pleaseeeeeeeo

Mathematics

2 answers:

sukhopar [10]2 years ago

6 0

Answer:

mmm x = -2 and put -2 over the square root on your calculator

Step-by-step explanation:

I hope this is right lol

Lady bird [3.3K]2 years ago

3 0

Answer: x=-2

Step-by-step explanation:

First subtract 4 from both sides

Sqrt(x+3)=1

Then square both sides

X+3=1

Then subtract 3

X=-2

Hope this helps!

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Mrs. Lee works 4y hours each day from Monday to Friday. She works (4y-4) hours on Saturday.

7nadin3 [17]

Answer:

24y-4

Step-by-step explanation:

4y*5=20y

20y+4y-4= 24y-4

5 0

2 years ago

Need help asappppppp

PilotLPTM [1.2K]

Given:

The right triangular prism.

Height of prism = 28 in.

Hypotenuse of base = 25 in.

leg of base = 24 in.

To find:

The lateral surface area of the prism.

Solution:

Pythagoras theorem:

$Hypotenuse^2=Perpendicular^2+Base^2$

Using Pythagoras theorem in the base triangle, we get

$25^2=24^2+Base^2$

$625-576=Base^2$

$\sqrt{49}=Base$

$7=Base$

The perimeter of the triangular base is:

$P=7+25+24$

$P=56$

Lateral area of a triangular prism is:

$A=Ph$

Where, P is the perimeter of the triangular base and h is the height of the prism.

Putting $P=56,h=28$ in the above formula, we get

$A=56(28)$

$A=1568$

Therefore, the lateral area of the prism is 1568 in².

8 0

2 years ago

HELP ME WITH THESE THANKS :)!

kvv77 [185]

Answer:

50; 72; 8; 57.9

Step-by-step explanation:

1. sqrt((30/2)^2 + (20)^2) = sqrt(15^2 + 20^2) = sqrt(225 + 400) = sqrt(625) = 25 (radius) * 2 = 50 (diameter)

2. 360 (degrees in a circle)/5 (sides in a pentagon) = 72 degrees

3. 360 (degrees in a circle)/x (sides) = 45 --> 360/45 = x --> 8 sides = x

4. sqrt(7^2 + (12/2)^2) = radius --> sqrt(49 + 36) --> sqrt85 * 2pi = circumference --> 57.9281062 = circumference --> 57.9

7 0

3 years ago

Melanie and Joseph are raising money for their class trip to the zoo. They each need $30 to pay for the trip and are selling box

lisabon 2012 [21]

Melanie needs $18 more dollars. joseph has sold 5 boxes which means he has $20 and melanie has sold 3 which means she has $12 so 30-12=18

4 0

3 years ago

Read 2 more answers

steve has these score on the exams for this semester 89 92 and 87. How much will have to make on the fourth exam to have a final

Zinaida [17]

THIS IS THE CORRECT ANSWER I GOT WHEN SOLVING ON MY IPHONE

6 0

3 years ago