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3 years ago

Solve the equation-4=2y+4x for y

Mathematics

1 answer:

skelet666 [1.2K]3 years ago

7 0

Answer:

y=-2−2x

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2 out of every 20 houses gave out chocolate bars for Halloween treats based on this information how many chocolate bars would yo

galina1969 [7]

60 chocolate bars is the answer

8 0

3 years ago

En un triángulo obtusángulo, uno de los ángulos mide 20° mas que el otro. El tercer ángulo, mide el doble que el mayor de los do

Troyanec [42]

Answer:

La medida del primer ángulo es 30°, la medida del segundo ángulo es 50° y el tercer ángulo mide 100°.

Step-by-step explanation:

Siendo "x" el valor de un ángulo del triángulo obtusángulo, sabes que uno de los ángulos, llamado segundo ángulo, mide 20° más que el primero. Este segundo ángulo se representa como x + 20°.

Además, un tercer ángulo mide el doble que el mayor de los dos, que en este caso es el ángulo cuya expresión es x + 20°. Por lo que el doble de este será 2*(x + 20)°, que será la medida del tercer ángulo.

Teniendo en cuenta que la suma de los ángulos interiores de un triángulo es 180°. Entonces, es posible sumar los valores de cada uno de los ángulos e igualarlos a 180°:

x + x + 20° + 2*(x + 20°) = 180°

Resolviendo:

x + x + 20° + 2*x + 2*20° = 180°

x + x + 20° + 2*x + 40° = 180°

4*x + 20° + 40° = 180°

4*x + 60° = 180°

4*x = 180° - 60°

4*x = 120°

x = 120° ÷ 4

x = 30°

Entonces, la medida del primer ángulo es 30°. El segundo ángulo es calculado como x + 20° = 30° + 20° = 50° mientras que el tercer ángulo es 2*(x + 20°) = 2*(30° + 20°) = 2*(50°) = 100°

<u><em>La medida del primer ángulo es 30°, la medida del segundo ángulo es 50° y el tercer ángulo mide 100°.</em></u>

3 0

3 years ago

On a clear day you can see about 25.2 miles from the upper observation platform of the Eiffel tower in Paris. Using the formula

fredd [130]

Answer:

D. 914 feet

Step-by-step explanation:

We are given the distance that a person can see on a clear day from the upper observation platform of the Eiffel tower in Paris. We are then required to estimate the height of the upper observation platform using the formula;

$d=\frac{5}{6}\sqrt{h}$

Where d is the distance and h the height of the upper observation platform. The first step would be to solve for h, that is make h the subject of the formula in the above equation;

We multiply both sides of the equation by the reciprocal of 5/6 which is 6/5;

$\sqrt{h}=\frac{6}{5}d$

The next step is to eliminate the square root on the Left Hand Side of the equation by squaring both sides;

$h=1.44d^{2}$

Given d is 25.2, h becomes;

$h=1.44*25.2^{2}\\h=914.4576$

To the nearest whole number, h becomes 914

8 0

3 years ago

Read 2 more answers

When cut into 10 equal slices each slice is 1/10 of the pizza Express how much of the pizza 7 of these slices would be in decima

alexira [117]

Answer:

0.7

Step-by-step explanation:

3 0

3 years ago

Can someone please help me with question 3

Anastasy [175]

Answer:

8.55 inches tall

Step-by-step explanation:

equation: h = -0.75t +12. The slope is -0.75 because that's the rate of the candle burning, and the y intercept is 12 because that's how tall it is initially.

Now plug in 4.6 for t you get:

h = -0.75t + 12

h = -0.75(4.6) + 12

h = -3.45 +12

h = 8.55 inches tall

4 0

4 years ago