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Akimi4 [234]
2 years ago
13

1/2(10x +5) what is the value of the expression when x=1.4

Mathematics
1 answer:
Anon25 [30]2 years ago
3 0

Answer:

19.2

Step-by-step explanation:

Rewrite 1/2(10x +5)  as  (1/2)(10x +5) for clarity.

Next, substitute 1.4 for x:

(1/2)(10[1.4] +5)

According to rules of operation, work inside parentheses must come before all else.  Thus we obtain:

(1/2)(14+5), or (1/2)(19).  Finally, this simplifies to 19/2.

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Find x<br><br> A. 4√6<br> B. 4√6/3<br> C. 16√6/3<br> D. 32√3/3
Cerrena [4.2K]

Answer:

C

Step-by-step explanation:

let hypotenuse of triangle with 60°=y

\frac{8\sqrt{2}}{y} =sin ~60\\8 \sqrt{2}=y \times \frac{\sqrt{3}}{2} \\y=\frac{16 \sqrt{2}}{\sqrt{3}} =\frac{16 \sqrt{6}}{3}

4 0
3 years ago
A student answers 160 of 200 questions on an exam correctly. What percent of the questions did he answer correctly?
Alexandra [31]

Dive correct answers by total questions:

160/200 = 0.80

Multiply by 100 to get percent:

0.80 x 100 = 80%

5 0
3 years ago
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A group of tourists spends $168 to rent snorkels and fins. A total of 10 snorkels and 12 pairs of fins are rented. Renting a sno
allsm [11]
The snorkel costs $12 to rent!
3 0
3 years ago
n airplane took off from an airport and traveled at a constant rate and angle of elevation. When the airplane reached an altitud
hram777 [196]

The angle of the plane when it rose from the ground is 64.8 degrees

<h3>Application of trigonometry identity</h3>

Given the following parameters from the question

Altitude of the airplane H =  500m

Horizontal distance from airport "d"  = 235

Required

angle of elevation

According to the trigonometry identity

tan x = opposite/adjacent

tan x = H/d
tan x = 500/235

tan x = 2.1277

x = arctan(2.1277)

x = 64.8 degrees

The angle of the plane when it rose from the ground is 64.8 degrees

Learn more on angle of elevation here: brainly.com/question/88158

#SPJ1

7 0
2 years ago
segment MN is shown. Point M is located at (7,6). Point N is located at (7,-4) What is the midpoint segment of MN
Luda [366]

Answer:

The midpoint of MN is <u>(7,1)</u>

Add the x coordinates 7+7=14 then you divide that by 2 giving you 7.

Then you add the y coordinates together 6+(-4)=2 then divide by 2 and that gives you 1. Therefore the answer is (7,1)

6 0
2 years ago
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