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4 years ago

The sum of two numbers is 4 and their difference is -10. What are the numbers

Mathematics

1 answer:

Anit [1.1K]4 years ago

7 0

Answer:

-3 and 7

Step-by-step explanation:

4 -(-10) = 14

14÷2=7(largest no.)

7-10=-3(smallest no.)

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(07.05 HC)

lianna [129]

Answer:

Step-by-step explanation:

2×8=16

not 10 that is why c is correct

8 0

3 years ago

Factor the expression completely -20x -40

Alenkasestr [34]

X=2

its x=2 because you have to divide -20x by -40 so the two negatives cancel out each other and then you get 2.

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3 years ago

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Justin bought 6 ribbons for an project . Each ribbons is 1/4 yard long . How many yards of ribbons did Justin buy?

d1i1m1o1n [39]

6 ribbons
1/4 yard long each
4 yards= 4 ribbons
4/4 yards
A: 6/4 Yards

3 0

3 years ago

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Harry is trying to solve the equation 0 = 2x2 − x − 6 using the quadratic formula. He has made an error in one of the steps belo

bija089 [108]

<h3><u>Given</u> - </h3>

➙ a quadratic equation in which Harry lagged due to an error made by him, 2x² - x - 6= 0

<h3><u>To solve</u> - </h3>

➙ the given quadratic equation.

<h3><u>Concept applied</u> - </h3>

➙ We will apply the quadratic formula as given in the question. So, let's study about quadratic equation first because we are supposed to apply the formula in equation.

What is quadratic equation?

➙ A quadratic equation in the variable x is an equation of the form ax² + bx + c = 0, where a, b, c are real numbers, a ≠ 0.

Now, what is quadratic formula?

➙The roots of a quadratic equation ax + bx + c = 0 are given by $\sf{\:\frac{-b \pm\: \sqrt {b ^ 2 - 4ac}}{2a}}$ provided b - 4ac ≥ 0.

<h3><u>Solution</u> - </h3>

here as per the given quadratic equation,

a = 2, b = -1 and c = -6

putting in the formula,

$\implies\sf{x=\frac{-(-1) \pm\: \sqrt {(-1)^2 - 4(2)(-6)}}{2(2)}}$

$\implies\sf{x=\frac{1 \pm\: \sqrt {1+48}}{4}}$

$\implies\sf{x=\frac{1 \pm\: \sqrt {49}}{4}}$

$\implies\sf{x=\frac{1 \pm\: 7}{4}}$

Solving one by one,

$\implies\sf{x=\frac{1 + \: 7}{4}}$

$\implies\sf{x=\frac{8}{4}}$

$\implies{\boxed{\bf{x=2}}}$

________________

$\implies\sf{x=\frac{1 - \: 7}{4}}$

$\implies\sf{x=\frac{-6}{4}}$

$\implies{\boxed{\bf{x=\frac{-3}{2}}}}$

________________________________

<em><u>Note</u> - Hey dear user!! You haven't provided the solution which was solved by Harry (A.T.Q). Please go through the solution as it will help you to find the error done by Harry.</em>

Hope it helps!! (:

4 0

2 years ago

-5.5 + 3.7 can u please help will mark branliest

Nadusha1986 [10]

Answer:

-1.8

Step-by-step explanation:

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3 years ago

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