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zvonat [6]
3 years ago
9

Write a phrase as a algebraic expression.4 times the sum of a number and 20.

Mathematics
1 answer:
Deffense [45]3 years ago
4 0

4(20 + x)

PLEASE RATE AS THE BRAINLIEST ANSWER! THANK YOU! :)

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In the diagram below, ABC - DEC. What is the value of x?<br> A 5<br> B. 3<br> C. 6<br> D. 4<br>​
Anastaziya [24]

Answer:

C

Step-by-step explanation:

Since the triangles are similar then the ratios of corresponding sides are equal, that is

\frac{BC}{EC} = \frac{AC}{DC}, substituting values

\frac{21}{7} = \frac{24-x}{x} ( cross- multiply )

21x = 7(24 - x) ← distribute

21x = 168 - 7x ( add 7x to both sides )

28x = 168 ( divide both sides by 28 )

x = 6 → C

7 0
3 years ago
If p varies jointly as q and r, and p = 150 when q = 18 and r = 5, find q when p = 345 and r = 9. TA​
hichkok12 [17]

Answer:

the answer is saltiness, why?

Step-by-step explanation:

because when i was little my bro used to ask me to go up and down with my mouth on his cucumber and i hated it but he offered me candy. Anyway now he gives me 5$ so ill do it more and as many times :D so i can get a new robucks card

8 0
3 years ago
IWILL GIVE BRAINLIEST!!!
maw [93]

Answer:

Step-by-step explanation:

6 0
3 years ago
Answerrrr this qustion
stiv31 [10]
G, you were on the right track! Just finish the problem - 15x=2250. Divide both sides by 15, and you get 150. Hope I helped! :)
5 0
3 years ago
Read 2 more answers
Find the exact value:<br> tan40/cot50<br><br> sec55/csc35<br><br> SHOW ALL WORK!
serious [3.7K]
These are the important trigonometric relations to base on:

cot (x) = 1/tan(x)
sec(x) = 1/cos(x)
csc(x) = 1/sin(x)

Following these properties, we could simplify the equation and input into the calculator to determine the exact value.

<span>tan40/cot50 = tan40/(1/tan50) = tan40tan50 = 1

</span><span>sec55/csc35 = (1/cos 55)/(1/sin 35) = sin35/cos55 = 1</span>
5 0
3 years ago
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