All categories

2 years ago

Help help please please

Mathematics

2 answers:

pentagon [3]2 years ago

7 0

Answer:

$\sqrt{74}$

Step-by-step explanation:

Pythagorean Theorem: a^2 + b^2 = c^2

7^2 + 5^2 = c^2

49 + 25 = c^2

$\sqrt{74}$

gregori [183]2 years ago

3 0

Answer:

c=√74

Step-by-step explanation:

h=c

p=5

b=7

Using pythogorean theorem,

h^2=p^2+b^2

c=√(7^2+5^2)

c=√(49+25)

c=√74

You might be interested in

Last year, Dale mowed the lawn in 45 min. This year, it took Dale 38 min to mow the lawn. What is the percent of decrease in mow

klasskru [66]

45-38= 7min decrease
(7/45)* 100=15.5%

3 0

3 years ago

Seven less than two times a number is 29.

Alexxx [7]

2x-7=29

"Seven less than" => minus 7.
"Two times <u>a number</u>" => 2x (x is the unknown number)
"is twenty-nine" => =29
Putting it all together,

-7 + 2x = 29
or
2x-7=29
(if you were wondering x is equal to 18)

4 0

2 years ago

Sean used the $1,200 he got from his graduation party to open a savings account. If the account earns 1% interest each month and

Greeley [361]

Answer:

$\$1,920$

Step-by-step explanation:

we know that

The simple interest formula is equal to

$A=P(1+rt)$

where

A is the Final Investment Value

P is the Principal amount of money to be invested

r is the rate of interest

t is Number of Time Periods

in this problem we have

$t=5*12=60\ months\\ P=\$1,200\\r=0.01$

substitute in the formula above

$A=\$1,200(1+0.01*60)$

$A=\$1,200(1.6)=\$1,920$

6 0

2 years ago

WORTH 100 POINTS. WILL GIVE BRIANLIEST. Six contestants on a reality TV show were stunned to find their lowest scoring colleague

Brut [27]

Answer:

8 The victim wasn't mauled by a cougar - Clue 1

20 Dr. Alpha was in the kitchen cooking - Clue 2

-12 The victim had no venomous bites - Clue 3

72 Miss Beta was at the movie theater - Clue 4

14 The victim wasn't electrocuted - Clue 5

14 Coach Omega was sleeping at the atrium - Clue 6

-8 The murder did not include a firearm - Clue 7

-12 Mrs.Gamma was doing yoga at the gym - Clue 8

169 The murder wasn't drowning - Clue 9

-274 Mr.Epsilon was swimming laps at a pool - Clue 10

is what i know, i will figure out in a bit! :D

Step-by-step explanation:

6 0

2 years ago

9x−9y=0 3x−4y=10 solve by elimination

NikAS [45]

Answer:

(-10,-10)

Step-by-step explanation:

9x-9y=0

3x-4y=10

In elimination, we want both equations to have the same form and like terms to be lined up. We have that. We also need one of the columns with variables to contain opposites or same terms. Neither one of our columns with the variables contain this.

We can do a multiplication to the second equation so that the first terms of each are either opposites or sames. It doesn't matter which. I like opposites because you just add the equations together. So I'm going to multiply the second equation by -3.

I will rewrite the system with that manipulation:

9x-9y=0

-9x+12y=-30

----------------------Add them up!

0+3y=-30

3y=-30

y=-10

So now once you find a variable, plug into either equation to find the other one.

I'm going to use 9x-9y=0 where y=-10.

So we are going to solve for x now.

9x-9y=0 where y=-10.

9x-9(-10)=0 where I plugged in -10 for y.

9x+90=0 where I simplified -9(-10) as +90.

9x =-90 where I subtracted 90 on both sides.

x= -10 where I divided both sides by 9.

The solution is (x,y)=(-10,-10)

3 0

2 years ago