All categories

1 year ago

Solve For X. 5 - 2x^2 = -15

Mathematics

2 answers:

Dvinal [7]1 year ago

4 0

Answer:

$\sqrt{10}$

Step-by-step explanation:

5 - 2x^2 = -15

2x^2 = 20

x^2=10

x= $\sqrt{10}$

DiKsa [7]1 year ago

3 0

-15-5= -20
Thus, -2x^2 = -20
Then -20/-2= 10
So, x^2 = 10
When you square root both of them, the answer is root 10

You might be interested in

11 th term of the following geometric sequence.<br> 10,50,250,1250

Natasha2012 [34]

Answer:

97,656,250

Step-by-step explanation:

The first term, a(1), is 10. The next is 5 times greater. And so on. Thus, the common ratio is 5, and the general formula for this sequence is

a(n) = a(1)*5^(n -1).

Therefore,

a(11) = 10*5^(11 - 1) = 10*5^10 = 97,656,250

6 0

2 years ago

Help me I will mark brainliest ....

ser-zykov [4K]

Answer:

1 1/2 eggs

1/2 almond paste

1/8 vanilla

3/8 sugar

Step-by-step explanation:

5 0

2 years ago

Need helppppppppppppp

REY [17]

I can’t see can you put it closer

4 0

2 years ago

Work out (4 x 3)² ÷ 6

blondinia [14]

An expression is defined as a set of numbers, variables, and mathematical operations. The solution of (4 x 3)² ÷ 6 is 24.

<h3>What is an Expression?</h3>

In mathematics, an expression is defined as a set of numbers, variables, and mathematical operations formed according to rules dependent on the context.

The solution of the expression (4 x 3)² ÷ 6 is,

(4 x 3)² ÷ 6

= (12)² ÷ 6

= 144 ÷ 6

= 24

Hence, the solution of (4 x 3)² ÷ 6 is 24.

Learn more about Expression:

brainly.com/question/13947055

#SPJ1

6 0

1 year ago

Express the following vector in the form v=v1i+v2j+v3k. 3u - v if u=(4,7,-3) and v=(2,-7,5).3u - v = ____ i + ____ j + _____ k.(

Alecsey [184]

Answer:

Step-by-step explanation:

Given the vectors u = (4,7,-3) and v=(2,-7,5), both vectors are 3-dimensional in nature and can also be rewritten as;

u = 4i+7j-3k and v = 2i-7j+5k

To get 3u-v, we will substitute the given vectors into the expression;

3u-v = 3(4i+7j-3k) - (2i-7j+5k)

open the parenthesis

3u-v = 12i+21j-9k - 2i + 7j - 5k

collect like terms

3u-v = (12i - 2i) + (21j + 7j) (-9k-5k)

3u - v = 10i+28j-14k

To simplify the answer, we will divide through by 2

3u - v = 10i/2+28j/2-14k/2

<em>Hence the simplified form of the expression is 5i+14j-7k</em>

3 0

2 years ago