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Anton [14]
2 years ago
5

Which computation should be done last 2x9 -3x5+4?

Mathematics
1 answer:
SVETLANKA909090 [29]2 years ago
5 0
2 x 9 - 3 x 5 + 4

In math/s we have the rule called BEDMAS
(a.k.a. BODMAS, BIDMAS, PEDMAS, etc)

Brackets
Exponent
Division
Multiplication
Addition
Subtraction

We go from top to bottom of the list of rules for every math equation. There’s just one exception, addition and subtraction are treated equally, and so when we have an equation with just addition and subtraction, we work left to right

2 x 9 - 3 x 5 + 4

We have no brackets and no exponents, and there’s nothing to divide.
So, we do multiplication
18 - 15 + 4

If you remember, addition and subtraction are treated the same. Therefore, we work left to right.
18 - 15 + 4 = 7

You can type your question into goorgle or a calculator, and you’ll get 7!
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Simplify the expression: 2(5a - 4a ) + 6a
miv72 [106K]

Hello from MrBillDoesMath!

 

Answer:     8a

Discussion :

Let's study the expression:

2(5a - 4a) + 6a

The boldfaced term simplifies to "a"  as 5 = 4 = 1. So the expression becomes

2a + 6a

As 2 + 6 = 8,  2a +  6a = 8a.



Regards, MrB

6 0
3 years ago
Help me please.Only help me in number 8
nataly862011 [7]
The answer is 95 hope this helps
3 0
3 years ago
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The length of the hypotenuse of a 30-60 -90 triangle is 14 units. what is the length of the short leg
kifflom [539]

Recall that the short leg is the side opposite the 30 degrees angle. And the ratio of the short leg to the hypotenuse is 1:2.

Let the length of the short leg be x, then,

\cfrac{x}{14}=\cfrac{1}{2}\\ \\\Rightarrow2x=14\\ \\\Rightarrow x=\cfrac{14}{2}=7

6 0
4 years ago
What is a complex fraction 7th grade?.
deff fn [24]

Complex fractions are fractions with a fractional numerator, denominator, or both.

Given,

We have to state about complex fraction;-

Complex fraction;

When both the denominator and the numerator, or both, contain fractions, the fraction is said to be complicated. A complex fraction with a variable is a complex rational expression. For instance: The complex fraction 4/(1/3) has the denominator as 1/3 and the numerator as 4.

Solving the complex fraction;

In the numerator and denominator, make a single fraction. By multiplying the numerator by the inverse or reciprocal of the denominator, you can use the fractional division rule. If it's required, simplify.

Learn more about complex fractions here;

brainly.com/question/8937441

#SPJ4

5 0
1 year ago
find the area of a right triangle with hypotenuse of length 10 and the height perpendicular to the hypotenuse of length 6
marta [7]

Answer:

Area is 24

Step-by-step explanation:

The three sides of the triangle are 6, 8, and 10. You could use A² + B² = C² and determine that A² + 36 = 100 to find the missing side is 8.

Then, the area of the square is 6 × 8 = 48. And each triangle that makes up the square is 48 ÷ 2 = 24.

3 0
3 years ago
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