3 years ago

What is 8.5+ 3.4 - 6.5 - (-1.6) = ?

Mathematics

2 answers:

kicyunya [14]3 years ago

7 0

Answer:

The answer is 3.8

borishaifa [10]3 years ago

7 0

8.5+ 3.4 - 6.5 - (-1.6) = 7

You might be interested in

Find three consecutive odd integers such that the sum of the smaller two is three times larger increased by seven

sukhopar [10]

Answer:

three consecutive odd integers: 2n-1 2n+1 2n+3

that the sum of the smaller two is three

times larger increased by seven: 2n-1 + 2n+1 = 3(2n+3) +7

4n = 6n+ 9 +7

4n = 6n+ 16

4n -6n = 16

-2n = 16

n = 16/(-2)

n=-8

a) 2n -1 = 2(-8) -1 = -17

b) 2n+1 = 2(-8)+1 = -15

c) 2n+1 = 2(-8)+3 = -13

Ans. -17 ; -15 ; -13

4 0

3 years ago

A model rocket is launched into the air from ground level.

Anon25 [30]

$p(x)=-16x^2+32x

p(x)=0
$

$-16x^2+32x = 0$

$-16x(x-2)=0$

$x_1=0, x_2=2$

Rocket will be in the air for 2 seconds.

8 0

3 years ago

Math practice <br> Will give brainest if correct

svetoff [14.1K]

Answer:

x > 24

Step-by-step explanation:

12 + 12 = 24

5 0

3 years ago

The sum of 3x2 + x – 7 and x² + 10 can be expressed as

Andrei [34K]

The sum of all that stuff is a number from here to there

6 0

3 years ago

Perchlorate is a chemical used in rocket fuel. People who live near a former rocket-testing site are concerned that perchlorate

ser-zykov [4K]

Answer:

$H_1 : \mu > 24.5$

Step-by-step explanation:

From the given information:

The sample size is 28

The population mean is 24.5 (ppb)

The sample mean is 225.3 (ppb)

Thus, the null and the alternative hypothesis can be computed as:

Null hypothesis:

$H_o : \mu \le 24.5$

Alternative hypothesis:

$H_1 : \mu > 24.5$

8 0

3 years ago