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kow [346]
3 years ago
6

Expand and simplify 7(2x+3)+2(2x+4)

Mathematics
1 answer:
nydimaria [60]3 years ago
5 0

7(2x + 3) + 2(2x + 4)      

Distribute/multiply 7 into (2x + 3), and distribute 2 into (2x + 4)

(2x(7) + 3(7)) + (2x(2) + 4(2))

14x + 21 + 4x + 8     Combine like terms

18x + 29

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For each of the following research scenarios, decide whether the design uses a related sample. If the design uses a related samp
Wewaii [24]

Answer:1. uses a related sample - repeated measures

2. . does not use a related sample--a

Step-by-step explanation:

Question 1.

step1  A repeated measure design is a design which measures a given sample repeatedly over a given time using different conditions or related measures.

step 2:In the treatment for compulsive hoarding, Here, measures are taken two times ie before and after treatment on the same 50 hoarders which shows a repeated measure, also the design is a within related sample of the same 50 hoarders to give measurement at different conditions  of treatment for  high and low hoarding scores so the design describes  a related sample - repeated measures

Question 2:

step 1 ; An unrelated sample  occurs when Samples being measured do not depend on each other  

Step 2;  1st Sample for comparison by John are random lonely people  and Second Sample are random non lonely people. so the two samples are independent on each other and will give different  measurement based on quality of sleep.   So the design does not use a related sample

8 0
3 years ago
Solve the equation for h? X=r-h/y
Troyanec [42]

Answer:

h = yX -yr

Step-by-step explanation:

X=r-h/y

X - r = h/y

y*(X-r) = h

h = yX -yr

4 0
3 years ago
How is 55% expressed as a fraction
sineoko [7]

Answer:

11/20

Step-by-step explanation:

3 0
4 years ago
Kallah needs to buy ribbon for a sewing project. The fabric store charges 2 dollars per meter. How much will it cost Kallah to b
Zinaida [17]
There are 100 cm in a meter
$1.50 for 75 cm.
3 0
3 years ago
Read 2 more answers
Jan rode to her friend's house with a constant speed of 14 m/hr. How long will she take to
sammy [17]

Answer:

1.07 hours

Step-by-step explanation:

14 miles = 1 hour

15 miles = x hours

Equal these two together

14 mi/1hr = 15 mi/xhr

Cross multiply

14 mi × x hr = 1 hr × 15 mi

I will stop using the units for now so it won't be as confusing

14x = 15

Divide both sides by 14 to isolate the variable

14x ÷ 14 = 15 ÷ 14

x = 1.07... hours

4 0
3 years ago
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