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2 years ago

11

Choose the property of real number that justifies the equation. I’m being timed. Answer all of the equations please! Whoever is

correct gets brainliest!

1 answer:

user100 [1]2 years ago

4 0

Answer:

1. Distributive

2. Associative

3. Multiplicative Identity

4. Additive Inverse

Step-by-step explanation:

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A car travels 20 mph slower in a bad rain storm than in sunny weather. the car travels the same distance in 2 hrs in sunny weath

ycow [4]

You can create two equations.

"<span>A car travels 20 mph slower in a bad rain storm than in sunny weather."
</span>
$\sf x-20=y$

Where 'x' represents speed in sunny weather and 'y' represents speed in rainy weather.

"<span>The car travels the same distance in 2 hrs in sunny weather as it does in 3 hrs in rainy weather."

$\sf 2x=3y$

</span>Where 'x' represents speed in sunny weather and 'y' represents speed in rainy weather.

We want to find the speed of the car in sunny weather, or 'x'. Plug in the value for 'y' in the first equation into the second equation.

$\sf \boxed{\sf x-20}=y$
$\sf 2x=3y\rightarrow2x=3(x-20)$

Distribute:

$\sf 2x=3x-60$

Subtract 3x to both sides:

$\sf -x=-60$

Divide -1 to both sides:

$\sf x=60$

So the car goes 60 mph in sunny weather.

5 0

2 years ago

What multiplies to 3025 and adds to -111?

sattari [20]

The numbers 55 and 55.

3 0

3 years ago

Which sequence of transformations will produce similar but not congruent figures?

RoseWind [281]

A dilation would produce<span> a </span>similar figure. Therefore, the sequence of transformations that will produce a similar but not congruent figures would be the first and the third option. Figure TUVWX is dilated by a scale factor of 6 and then rotated 90° counterclockwise around the origin; and f<span>igure TUVWX is reflected across the x-axis and dilated by a scale factor of 7. Hope this answers your question.</span>

3 0

3 years ago

The width of a rectangle is 7/15 of its length. The width of the rectangle is 56 cm. Find the length of the rectangle.

Hoochie [10]

W = 7/15 L

w = 56

56 = 7/15 L

56 x 15/7 = 7/15 x7 L

L = 120

8 0

3 years ago

Write the quadratic equation y= x^2 -6x = 7 in vertex form.

lapo4ka [179]

Answer:

(x - 3)² - 16 = 0

Step-by-step explanation:

The equation of a parabola in vertex form is

y = a(x - h)² + k

where (h, k) are the coordinates of the vertex and a is a multiplier

Subtract 7 from both sides

x² - 6x + 7 = 0 ← in standard form

with a = 1, b = - 6

Given a quadratic in standard form then the x- coordinate of the vertex is

$x_{vertex}$ = - $\frac{b}{2a}$ = - $\frac{-6}{2}$ = 3

Substitute x = 3 into the equation for y

y = 3² - 6(3) - 7 = 9 - 18 - 7 = - 16 ⇒ (h, k) = (3, - 16)

y = (x - 3)² - 16 = 0

7 0

3 years ago