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sattari [20]
2 years ago
9

Please help me for urgent​

Mathematics
1 answer:
Keith_Richards [23]2 years ago
5 0

For question (ii) I'm not sure if the answer is correct or not because I don't understand the question asked ...

I hope I can help ....

You might be interested in
Y= -0,5x – 2<br> y= 1,5x + 8
Masja [62]

Answer:

a. ( 5 )  ( 0 ) − 2

= −2

b. ( 5 ) ( 1 ) + 8

= 13

Hope it helps

Please mark me as the brainliest

Thank you

8 0
3 years ago
The paint in a certain container is sufficient to paint an area equal to 9.375 m^2. How many bricks of dimensions 22.5 cm × 10 c
Minchanka [31]
Let l = 22.5 cm, b = 10 cm and h = 7.5 cm
Surface area of each brick
= 2(lb + bh + lh)
= 2(22.5 × 10 + 10 ×7.5 + 7.5 × 22.5 cm²
= 2 (225 + 75 + 168.75) cm²
= 2(468.75) cm² = 937.5 cm²

Area that can be painted using the paint of container = 9.375 m² = 9.375 × 100 × 100 cm²

Number of bricks that can be painted
=   \frac{Total \: area \: that \: can \: be \: painted}{ Surface \: area \: of \: each \: brick }
=  \frac{9.375 \times 100 \times 100 \: cm {}^{2} }{937.5 \: cm {}^{2} }  = 100

Hence, 100 bricks can be painted out of the paint given in the container.
8 0
2 years ago
Given m||n, find the value of x.<br><br> (7x-4)<br> (3x+28)º
Furkat [3]

Answer:

8

Step-by-step explanation:

7 x 8 = 56 56 - 4 = 52.

3 x 8 = 24 24 + 28 = 52

4 0
2 years ago
John is organizing a local event. He expects the approximate attendance for the event to be modeled by the function a(t) = -16t2
german

Answer:

the duration of this event is 4 hours

Step-by-step explanation:

This function is a quadratic one

let Δ be the dicriminant :

  • a = -16
  • b = 48
  • c= 64
  • Δ = 48²-4*(-16)*64 = 6400

so there are two values that satisfy -16t²+48t+64 = 0  x and y

  • x= (-48+80)/-16*2 = -1
  • y= (-48-80)/-16*2= 4

x<0 so w won't take it since time is a positive value here

so t = y = 4h

8 0
2 years ago
I need this quickly:)
Vladimir [108]

Answer: r \leq 5

Step-by-step explanation: If you need it quick then no explanation, but brainliest please?

7 0
2 years ago
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