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irakobra [83]
3 years ago
10

What is the solution to the system of equations. y= x - 1 x + 4y = 16

Mathematics
1 answer:
inna [77]3 years ago
5 0

Answer:

x=4 y=3

Step-by-step explanation:

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Help!!!!<br>Somebody help me solve these questions please ​
kykrilka [37]

Step-by-step explanation:

Area of a trapezium = SOPS/2 × ph

Sops is the sum of 4+10 = <u>1</u><u>4</u>

14/2 is 7. 7×4 = <u>2</u><u>8</u>

<u>A</u><u> </u><u>=</u><u> </u><u>2</u><u>8</u><u>c</u><u>m</u><u>²</u>

Area = L×W

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5 0
3 years ago
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The table below shows a pattern in the cost of renting a car based on the number of days rented. Car Rentals Number of Days (d)
andrezito [222]

The linear equation that describes the pattern in the cost of renting a car is given by:

  • D. c = 34d + 25

<h3>What is a linear function? </h3>

A linear function is modeled by:

y(x) = mx + b

In which:

  • m is the slope, which is the rate of change, that is, by how much y changes when x changes by 1.
  • b is the y-intercept, which is the value of y when x = 0.

In this problem:

  • For each day, the cost of renting a car increases by 34, hence, the slope is of 34, and the equation is:

c(d) = 34d + b

When d = 4, c = 161, and this is used to find b.

c(d) = 34d + b

161 = 34(4) + b

b = 25

Hence, the equation is c = 34d + 25, and option D is correct.

You can learn more about linear functions at brainly.com/question/25823744

6 0
2 years ago
How many 4-digit numbers can be formed from the digits 1, 2, 3, 4, 5, 6 and 7 which are divisible by 5 when none of the digits a
Masja [62]

Answer:

120 4-digit numbers.

Step-by-step explanation:

For the numbers to be divisible by 5 they must end in 5.

So the  total number of first 3 digits of the 4-digit number are given by the

number of permutations of 3 from the numbers 1,2,3,4,6 and 7 (6 digits)

= 6P3

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= 120.

6 0
2 years ago
Will give brainlist if its right!
Genrish500 [490]

Answer:

7/30

Step-by-step explanation:

or 7 out of thirty.

plz correct me if im wrong, ill fix it

3 0
3 years ago
Read 2 more answers
Use the quadratic formula to si<br> 3x2 + 8x – 4= 0
omeli [17]

Answer:

\large\boxed{x=\dfrac{-4-2\sqrt7}{3}\ or\ x=\dfrac{-4+2\sqrt7}{3}}

Step-by-step explanation:

\text{The quadratic formula for a quadratic equation}\ ax^2+bx+c=0\\\\\text{determinant:}\ \Delta=b^2-4ac\\\\\text{If}\ \Delta0,\ \text{then the equation has two different solutions}\ x=\dfrac{-b\pm\sqrt\Delta}{2a}.

\text{We have:}\\\\3x^2+8x-4=0\\\\a=3,\ b=8,\ c=-4\\\\\Delta=8^2-4(3)(-4)=64+48=112>0\\\sqrt\Delta=\sqrt{112}=\sqrt{(16)(7)}=\sqrt{16}\cdot\sqrt7=4\sqrt7\\\\x=\dfrac{-8\pm4\sqrt7}{2(3)}=\dfrac{-8\pm4\sqrt7}{6}=\dfrac{2(-4\pm2\sqrt7)}{6}=\dfrac{-4\pm2\sqrt7}{3}

3 0
3 years ago
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