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3 years ago

The equations 2x - 5y= -5 11x-5y = 15 9x+ 5y = 5 and 14x+ 5y = -5 are shown on the graph below.

Mathematics

1 answer:

Naya [18.7K]3 years ago

6 0

Answer:

the right system is:

2x - 5y= -5

14x+ 5y = -5

Explanation:

2x - 5y= -5 (1)

14x+ 5y = -5 (2)

(1)+(2)→ 16x=-10 then x= -10/16 = -0.625 ≈ -0.6

Now ,Using equation (1) x = -0.625 then y = 0.75 ≈ 0.8

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Richard earns 2700 a month. He received a 3% raise. What is Richards new annual salary

elena-14-01-66 [18.8K]

$2700 \times 103\% = 2781 \: (monthly) \\ 2781 \times 12 = 33372 \: (annual)$
The answer is $33,372

Hope this helps.

- Max

7 0

3 years ago

Write the expression in word form 12÷6×2

finlep [7]

Answer:

Twelve divide by six times two.

Step-by-step explanation:

To solve this problem, first you have to use the order of operations stands for parenthesis, exponents, multiply, divide, add, and subtract from left to right.

First, multiply & divide numbers from left to right.

$\displaystyle 12\div6\times2$

$\displaystyle 12\div6=2$

$\displaystyle 2\times2=4$

Therefore, the correct answer is twelve divide by six times two or 4.

<h2>Hope this helps!</h2><h2 /><h2>Have a wonderful blessing day! :)</h2><h2 /><h2>Good luck! :)</h2>

6 0

3 years ago

I need help with this

Softa [21]

Nothing can be done with this question!

8 0

3 years ago

Ella Buys a book and a pen for $14. The cost of the book is two dollars more than twice the cost of the pen. Write a system of l

Vilka [71]

Answer: The book costs $10 and the pen costs $4✔️

Step-by-step explanation:

Let B the cost of the book and let P the cost of the pen.

Then we know:

The book and the pen cost $14:

B + P = $14 } Equation 1

We also know:

The cost of the book is two dollars more than twice the cost of the pen.

B = 2P + $2 } Equation 2

Now we can substitute the value of B from the equation 2 in the equation 1:

2P + $2 + P = $14

3P = $14 - $2 = $12

P = $12/3 = $4 , cost of the pen

Since we know the value of B from the equation 2, we can calculate B:

B = 2P + $2 = 2x$4 + $2 = $8 + $2 = $10 , cost of the book

Answer: The book costs $10 and the pen costs $4✔️

<h3>Verify </h3>

We can substitute these values in equations 1 and 2 and check the results:

B + P = $14 } Equation 1

$10 + $4 = $14 ✔️check!

B = 2P + $2 } Equation 2

$10 = 2x$4 + $2 = $8 + $2 = $10 ✔️check!

<h2><em>Spymore</em></h2>

5 0

3 years ago

Need help!

siniylev [52]

<u>Correct </u><u>Inputs </u><u>:-</u>

In ΔABC right angled at A, D and E are points on BC, C such that BD = CD and AD ⊥ BC

$\underline{\underline{\large\bf{Solution:-}}}\\$

$\longrightarrow$ Let us know about definition of altitude first. The altitude of a triangle is the perpendicular line segment drawn from the vertex to the opposite side of the triangle.

$\leadsto$ Median is the line segment from a vertex to the midpoint of the opposite side.

<u>Let us Check all options one by one </u>

CD is line segment which starts from vertex C but don't falls on opposite side AB thus it is not an altitude.❌

BA is line segment which starts from vertex B and falls perpendicularly on opposite sides AC and is thus an altitude.✔️

AD is line segment which starts from vertex A and falls perpendicularly on opposite side BC and is thus an altitude.✔️

AE is a line segment which starts from vertex A but doesn't falls perpendicularly on opposite side BC and is thus not an altitude.❌

AD falls on BC with D as mid point because BD = CD and is thus a median. ✔️

8 0

2 years ago