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3 years ago

Use simultaneous equations solve the following problem.

Mathematics

2 answers:

Genrish500 [490]3 years ago

6 0

Let E represent English test and M represent Math test.

M + E = 164

+ M - E = 22

2M = 186 eliminated E by adding the two equations

M = 93 divided both sides by 2

Now, plug that value into either of the equations to solve for E.

M - E = 22 → 93 - E = 22 → -E = 22 - 93 → -E = -71 → E = 71

Answer: Math = 93, English = 71

kupik [55]3 years ago

5 0

her u go work harder so work about it

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Owen draws the cube shown. Pat draws a cube with a side length that is 3 units

kaheart [24]

Answer:

The volume of Carly's cube is 125 in³

Explanation:

The volume of a cube is calculated as the length of the side raised to the cube:

Volume = side³

1. Cube drawn by Owen

From the drawing:

Side = 7 in

2. Cube drawn by Pat

Side length is 3 units greater than the side length of Owen’s cube:

Side = 7in + 3in = 10 in

3. Cube drawn by Carly

Side length is 1/2 the side length of Pat’s cube:

Side = (1/2) × 10 in = 5 in

Volume = (5 in)³ = 125 in³

6 0

3 years ago

Blaire walked around her garden in the morning and saw that 18 of her tomato plants had tomatoes ready to pick. If this was 90%

vredina [299]

Blaire has 20 tomato plants altogether.

Step-by-step explanation:

Given,

Tomatoes plants ready to pick = 18

This represents 90% of total tomato plants.

Let,

x be the original number of tomato plants.

90% of x = 18

$\frac{90}{100}*x=18$

$0.9x=18$

Dividing both sides by 0.9

$\frac{0.9x}{0.9}=\frac{18}{0.9}$

$x=20$

Blaire has 20 tomato plants altogether.

Keywords: percentage, division

Learn more about division at:

#LearnwithBrainly

7 0

3 years ago

(2.5x10^-10) x (7x10^-6) express your answer in scientific notation

morpeh [17]

Answer:

Hello my friend! The answer is 1.75X10^-15

Step-by-step explanation:

If you multiply 2.5 x7 = 17.5

When we do the product of exponential terms with the same base, we can sum de exponents. In this case (-10) + (-6) = -16.

However, to scientific notation, we have to use 1.75

So, the final result wich were 17.5x10-16, will be "1.75x10^-15"

6 0

3 years ago

The equation of a function is represented by f(x)=(x + 4) ( x - 3). Terri stated that the roots are 4 and -3. Is Terri right or

Alika [10]

Answer:

Terri is wrong the roots are -4 and 3. She mixed up the numbers

Step-by-step explanation:

Hope it helps mark me brainliest

3 0

3 years ago

What is pi 3.15 3.75 3.14

andrey2020 [161]

Your question;
What is pi?
My answer;
Pi or π is commonly known as 3.14
Hope I helped,
♥ James

6 0

4 years ago

Read 2 more answers