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Ganezh [65]
3 years ago
9

Can anyone Pleaseee tell me how to do this I’m a little confused?

Mathematics
1 answer:
Nadya [2.5K]3 years ago
6 0

Answer:

Step-by-step explanation:

They are both 25.

Why because in a 45, 45, 90 triangle the formula to find the three sides is a, a, a√2.

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Your math teacher tells you that the next test is worth 100 points and contains 38 problems. Multiple-choice questions are worth
rusak2 [61]
If we assume that
x isthe number of multiple choice questions, and y is the number of word problems, we can write a system of equations like:
{ x + y = 38
{ 2x + 5y = 100

If we multiply the first equation by -2 we get:
{ -2x-2y = -76
{ 2x + 5y = 100

Now if we add both equations we get only equation with 1 unknown (y) :

3y = 24 ⇒ y = 8

Substituting the calculated value to the first equation we get:

x + 8 = 38 ⇒ x = 30

The solution:
{ x = 30
{ y = 8

means that:
The test had 30 multiple choice questions, and 8 word problems.
4 0
3 years ago
Evaluate (1/3)(m) - 1 - (1/2)(n) m=21 and n=12
Aneli [31]

Answer:

the answer is 0

Step-by-step explanation:

(1/3)(21)-1-(1/2)(12)

The first thing you do is that you multiply 1/3 times 21/1 which equal 7 then you  multiply 1/2 times 12/1 which that equal 6 then you solve 7-1-6 and you get 6-6 which equal 0 i hope this help you and i hope you have a goood day.

8 0
3 years ago
Graph the line that passes through the points (9,-8) and (9,6) and determine the
avanturin [10]

Answer:

<em>x = 9</em>

Step-by-step explanation:

The standard form of equation of a line is expressed as y = mx+c

m is the slope

c is the y intercept

Note that the line does not have a slope and the x intercept of the line is a point where the line cuts the x axis. Hence the equation of the line will be expressed as x = c where c is the x intercept;

<em>From the graph, the x intercept =9. Hence the equation of the given line is x = 9</em>

7 0
3 years ago
Go to the link related to Brainly of course, and "answer" the question that's there, ok?
laila [671]

Answer:

56:190

Step-by-step explanation:

That's the ratio?

I'm not sure what the question is asking.

3 0
3 years ago
Read 2 more answers
I don't get how to solve it
skelet666 [1.2K]
I don't know for a fact but I think k=1.125
8 0
3 years ago
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