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vovikov84 [41]
3 years ago
14

Is 1.2/3 and 1.8/ 4/5 proportional

Mathematics
1 answer:
Stella [2.4K]3 years ago
3 0

Answer:

No

Step-by-step explanation:

1.2/3 =0.4

4/5 can be written as 0.8

So, 1.8/0.8 = 2.25.

However, 1.8/4/5 is the same as:

1.8/1 ÷ 4/5

Keep Change Flip

1.8/1 x 5/4 = 9/4

(1.8 x 5=9 & 1 x4 =4)

9/4 =2.25

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I need help. If you can, thank you.
defon

Answer:

Y = 2x + 1

Step-by-step explanation:

Hope this helps. Pls give brainliest.

4 0
3 years ago
Read 2 more answers
Determine whether the system of equations has one solution, no solution, or infinitely many solutions. 4x=10+4y and 2x-2y=15
galben [10]

Answer:

infinitely many solutions

Step-by-step explanation:

Given the simultaneous equation

4x=10+4y... 1

2x-2y=15 .... 2

_____________

4x-4y = 10 * 1

2x-2y = 15 * 2

__________--

4x-4y = 10

4x-4y = 30

Add both equation

8x - 8y = 10+30

8x-8y = 40

Divide though by 8

x-y = 5

x = 5 +  y

Since the result gave 1 equation and 2 unknowns, then we will let x =k

k = 5 + y

y = k -5

k can be any integer

(x,y) = (k, k-5)

This show that the equation has infinitely many solutions

6 0
3 years ago
Please can you help me. Thanks.
Katena32 [7]

Answer:

1

Step-by-step explanation:

The average rate of change is measured as

\frac{f(b)-f(a)}{b-a} in the closed interval [ a, b ]

here [ a, b ] = [ - 5, 5 ]

f(b) = f(5) = - 5² + 5 + 3 = - 25 + 8 = - 17

f(a) = f(- 5) = -(- 5)² - 5 + 3 = - 25 - 2 = - 27

Hence

average rate of change = \frac{-17-(-27)}{5-(-5)} = \frac{10}{10} = 1


4 0
3 years ago
Please Help ME!! I BEG YALL! Ill give BrAINlIeSt! :) Given the figure below, find the values of x and z.
madam [21]

Answer: \left \{ {{x=10} \atop {z=63}} \right.

Step-by-step explanation:

Vertical Angles states that 9x+27=117

Supplementary Angles states that 117+z=180

9x+27=117\\Subtract (27)\\9x=90\\Divide(9)\\\left[\begin{array}{c}x=10\end{array}\right] \\\\117+z=180\\Subtract(117)\\\left[\begin{array}{c}z=63\end{array}\right]

<em>Hope it helps <3</em>

3 0
4 years ago
In circle O, m∠R = 30.8°. Find m∠NOQ.
nordsb [41]

Given:

In circle O, m∠R = 30.8°.

To find:

The m∠NOQ

Solution:

Central angle theorem: According to this theorem, the central angle is always twice of subtended angle on the same arc.

Angle NOQ and angle NRQ are on the same arc but ∠NOQ is the central angle and ∠NRQ is the subtended angle on the arc NQ.

Using central angle theorem, we get

m\angle NOQ=2\times m\angle NRQ

m\angle NOQ=2\times m\angle R

m\angle NOQ=2\times 30.8^\circ

m\angle NOQ=61.6^\circ

Therefore, m\angle NOQ=61.6^\circ.

4 0
3 years ago
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