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FinnZ [79.3K]
3 years ago
7

Mental math to find 420 - 177

Mathematics
1 answer:
solniwko [45]3 years ago
7 0

Answer:

420

-177

---------

243

ANSWER=243

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Two angles are supplementary, and one of the measures 35 degrees. What is the measure of the other angle?
Alekssandra [29.7K]
Answer=145

this is because supplementary means the two angles equal 180
180-35=145
3 0
1 year ago
Given: KLMN is a trapezoid m∠K = 90°, m∠N = 45° LK = LM = 10 Find: KN, Area of KLMN
Ilya [14]
Let KLMN be a trapezoid (see added picture). From the point M put down the trapezoid height MP, then quadrilateral KLMP is square and KP=MP=10.
A triangle MPN is right and <span>isosceles, because
</span>m∠N=45^{0}, m∠P=90^{0}, so m∠M=180^{0}-45^{0}-90^{0}=45^{0}.Then PN=MP=10.
The ttapezoid side KN consists of two parts KP and PN, each of them is equal to 10, then KN=20 units.
Area of KLMN is egual to A= \frac{LM+KN}{2} *MP= \frac{10+20}{2} *10=150 sq. units.


5 0
3 years ago
Is 7/10 more than 1/2
Bingel [31]
7/10 is bigger because it is more than half
5 0
3 years ago
Question 3
BigorU [14]

Answer:

  30 mph

Step-by-step explanation:

time = distance/speed

If x represents Jane's speed along the summit then her total exploration time is ...

  12/x + 40/(x -5) = 2 . . . . . hours

Multiplying by (x)(x -5), we get ...

  12(x -5) +40(x) = 2(x)(x -5)

Dividing by 2 and subtracting the left side gives ...

  x^2 -31x +30 = 0

  (x -30)(x -1) = 0 . . . . . factor

Solutions are x = 30 and x = 1, values of x that make the factors zero. A speed of 1 mph makes no sense in this problem, so ...

Jane's speed along the summit was 30 mph.

3 0
3 years ago
Read 2 more answers
Solve the system using linear combination.
Angelina_Jolie [31]

Answer:

Delta does not have a relative extreme in the equation, so it is variable y It can not be true

Step-by-step explanation:

s = 5x + 3y

There is an answer

The rest of the equation that has no substituted delta is not true, so the prime variables have relative extremes.

8 0
2 years ago
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