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alexandr402 [8]
3 years ago
5

Find the sum of 45 and 26 using mental math. Show your thinking on the open number line

Mathematics
1 answer:
Afina-wow [57]3 years ago
3 0

(sum is adition)

This is all truely from my head:

40 plus 20 is 60.

5 plus 6 is 11.

60 plus 11 is 71.

please mark brainliest if you think it's gucci!

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Hey guys I need help plz asap
Ilya [14]
Answer:

Explanation:

AB = BC
=> Triangle ABC is an Isosceles Triangle
Thus, Angle C = Angle A
DE = BE
=> Triangle DEB is an Isosceles Triangle
Thus, Angle D = Angle B

Proof that triangle ABC and DEB are similar:

Angle DBE = Angle A (corresponding angle)
Angle BDE = Angle C (Both Triangle are Isosceles, if one pair of the angle are equal then the other pair should also be equal)

=> Triangle ABC ~ Triangle DEB (AA)

Therefore, Angle E = Angle B

Find angle B:

Angle C + Angle A + Angle B = 180
40 + 40 + angle B = 180
Angle B = 180 - 80
Angle B = 100 degree

But Angle B = Angle E = 100 degree

Therefore, Angle E = 100 degree
3 0
3 years ago
What is the value of x? (1) x2+x+10=16 (2) x=4y4+2y2+2?
alexandr402 [8]
X equals the square root of 6-x 


x= the eqaution for number 2
5 0
3 years ago
The graph of y = x 2 has been translated 7 units to the left. The equation of the resulting parabola is _____.
strojnjashka [21]
To move the function to the left you have to increase x inside the function
think of it like g(x)=f(x+7)

the solution is
y=(x+7)^2
6 0
3 years ago
Read 2 more answers
the scale on a map is stated as 1:250000 two villages are 9 cm apart on the map how far from each other are the two villages in
Karolina [17]

Answer:

22.5 kilometers

Step-by-step explanation:

we know that

The scale drawing is

1:250,000

That means

1 unit on a map represent 250,000 units in the actual

or

1 cm on a map represent 250,000 cm in the actual

or

1 cm on a map represent 2,500 m in the actual

or

1 cm on a map represent 2,5 km in the actual

therefore

using proportion

Find out how much represent 9 cm apart on the map

\frac{1}{2.5}\ \frac{cm}{km}=\frac{9}{x}\ \frac{cm}{km}\\\\x=9(2.5)\\\\x=22.5\ km

7 0
3 years ago
Quick answers please!<br><br> write 525 as a product of its prime factors
Nitella [24]
3×5×5×7 3 × 5 × 5 × 7
5 0
3 years ago
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