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frosja888 [35]
3 years ago
12

I need help with this please, thank​

Mathematics
1 answer:
aleksandrvk [35]3 years ago
4 0
5x+4y=8

-5x from both sides, you get 4y=-5x+8
then you divide the equation by 4.

y=-5/4x+2

10x-4y=46

-10x from both sides and you get -4y=-10x+46
divide the whole equation by -4 and you get y=5/2x + -23/2 .

source: MathPapa

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Aman and Prakash coloured an entire Harry Potter Colouring Book together. The book had 75 pages. Aman coloured 60% of the pages.
tia_tia [17]

Answer:

A) 30 pages

Step-by-step explanation:

No of pages = 75

Aman coloured 60 % of the pages= 75 *60/100= 45

Prakash coloured 75 - 45 = 30 pages

8 0
3 years ago
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An engineer needs to determine the distance across a river without swimming to the other side. The engineer notices a tree on th
nasty-shy [4]

Answer:

Step-by-step explanation:

The engineer can use a clinometer to measure the angle of elevation of the top of the tree. Let the height of the tree be represented by x, the she could determine the distance across the river, d, by applying the trigonometric function.

Tan θ = \frac{opposite}{adjacent}

           = \frac{x}{d}

the the distance, d = x ÷ Tan θ

Assume the angle of elevation of the top of the tree is 30^{o}, and the height of the tree is 10 m, then the distance, d, across the river would be;

d = \frac{10}{0.5774}

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The sketch to the explanation is attached to this answer for more clarification.

4 0
3 years ago
-1/2+c=31/4<br><br> A. C=33/4<br> B. C=8<br> C. 29/4<br> D. 7
kkurt [141]

Answer:

A

Step-by-step explanation:

-1/2+c=31/4

-1/2+c+1/2=31/4+1/2

c=33/4

4 0
3 years ago
1. Consider a cylinder with radius 4 cm and a height of 12 cm. Determine the volume of the given cylinder. Describe how to calcu
sergiy2304 [10]

↪Hola user_____________

⭐Here is Your Answer...!!!

____________________

↪SURFACE AREAS AND VOLUMES

↪The VOLUME of any object is nothing but the the capacity to hold the amount of substance inside it . It defines the Amount of substance that can occupied bythe object inside it ..

↪Volume = Base Area × Height

↪thus for the Cylinder ; Volume of cylinder = Pi(R^2) × H

↪thus volume = 3.14 × R^2 × H

↪thus here given as R = 4 cm and H = 12cm

↪Volume = 3.14 × 16 × 12= 602.88 cm^3

thus

↪the Volume of the Cylinder = 602.88 cm^3

______________________

⚓〽⭐

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Answer:

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