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ra1l [238]
3 years ago
12

Simplify 6 - 2 3 + (-9 + 5) · 2.

Mathematics
2 answers:
Lapatulllka [165]3 years ago
7 0
I think the answer is -25
Licemer1 [7]3 years ago
4 0
Answer: -25

Hope this helps! <3
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9. Lula bought new furniture on her credit card for $993. If she pays it off in 6 months there will be no interest on her purcha
nata0808 [166]

Answer:

$165.50 dollars

Step-by-step explanation:

$993 / 6 = $165.50

5 0
3 years ago
A turtle and a rabbit engage in a footrace over a distance of 4.00 km. The rabbit runs 0.500 km and then stops for a 90.0-min na
Oxana [17]

Answer:

(a) 2.29 km/h

(b) 9 km/h

Step-by-step explanation:

For part (a) you have to apply<em> the average speed formula</em>, which is defined by:

v=\frac{d}{t}

where d is the total distance traveled and t is the total time needed.

d=\frac{4.00}{1.75}=2.29 km/h

For part (b) you have to calculate the running time (T) , which is the total time of the race minus the nap time:

The nap time in hours is:

90/60 = 1.5 h (because there are 60 minutes in one hour)

The running time is:

T= 1.75 - 1.5 = 0.25 h

Let t1 represent the time before the nap and t2 the time after the nap:

t1+t2 = T

t1+t2 = 0.25

You have to apply the formula d=vt before and after the nap:

-Before the nap, the distance traveled was 0.50 km

0.50 = v1t1

-Afer the nap, the distance traveled was 3.50 km

3.50=v2t2

But v2=2v1 (because after the nap the rabbit runs twice as fast)

You have to solve the system of equations:

t1=0.25-t2 (I)

v1t1=0.50 (II)

2v1t2=3.50 (III)

Replacing (I) in (II)

v1(0.25-t2)=0.50

Applying distributive property and solving:

0.25v1-v1t2=.050

For (III) you have that v1t2=3.50/2=1.75. Hence:

0.25v1-1.75=0.50

Solving for v1:

v1 = 9 km/h

7 0
3 years ago
Can someone please help me ??!!!!!
shtirl [24]

First problem:

C

Second:

A

Third:

C

8 0
3 years ago
Brenda earns $1,700 per month after taxes. She is working on her budget and has the first three categories finished.
3241004551 [841]
Brenda earns $1,700 per month after taxes. She is working on her budget and has the first three categories finished.Housing $612 
Food $238 
Transportation $370 
What is the problem with this budget? 
The answer is => She has allotted more than 36% of her income for housing
8 0
3 years ago
Read 2 more answers
Find the value of x.<br> Right triangle: Hypotenuse is 11, base is x, angle is 22 degrees.
kirill [66]
We know that the trigonometric identity that uses the adjacent side and the hypotenuse is cosine. We can set this up as:
cos(22) =  \frac{x}{11}

We need to solve for x, so let's isolate it:
x = 11cos(22) = 10.2

So, x = 10.2 units
8 0
3 years ago
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