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3 years ago

Please help ASAP I have only one more try 20pts and brainliest

Mathematics

2 answers:

vovikov84 [41]3 years ago

8 0

Answer:

the and should be 45 hope this helps

Step-by-step explanation:

Monica [59]3 years ago

7 0

Answer:

x=45

Step-by-step explanation:

x + 3x = 180 .............so x = 45

You might be interested in

This ten frame show 5+8 draw to make ten then write the new fact

Butoxors [25]

Draw one ten, (If you have to draw ones, draw 3 of those) and the new fact is 10 + 3. (That equals 13, if you need that.)

7 0

3 years ago

1. What's one way we can check our answer to 2 x10 = 20?

allsm [11]

The answer is b
.....

4 0

3 years ago

What is the mass of an object that has a density of 1.3 g/cm3 and a volume

tangare [24]

Answer:

The mass of the object is 2.6 grams

Step-by-step explanation:

The density of an object is the ratio between its mass and its volume

The equation of the is d = $\frac{m}{V}$ , where

m is the mass

V is the volume

Let us use this equation to solve the question

∵ An object has a density of 1.3 g/cm³

∴ d = 1.3 g/cm³

∵ Its volume is 2 cm³

∴ V = 2 cm³

→ Substitute them in the equation of the denisty above

∵ 1.3 = $\frac{m}{2}$

→ Multiply both sides by 2

∴ 2 × 1.3 = 2 × $\frac{m}{2}$

∴ 2.6 = m

∴ The mass of the object is 2.6 grams

8 0

3 years ago

2x - y = 8<br> y= x-3<br> Use substitution method

uranmaximum [27]

Answer:

Slope = 0.222/2.000 = 0.111

x-intercept = -3/1 = -3.00000

y-intercept = 3/9 = 1/3 = 0.33333

Step-by-step explanation:

Step 1 :

Equation of a Straight Line

1.1 Solve x-9y+3 = 0

Tiger recognizes that we have here an equation of a straight line. Such an equation is usually written y=mx+b ("y=mx+c" in the UK).

"y=mx+b" is the formula of a straight line drawn on Cartesian coordinate system in which "y" is the vertical axis and "x" the horizontal axis.

In this formula :

y tells us how far up the line goes

x tells us how far along

m is the Slope or Gradient i.e. how steep the line is

b is the Y-intercept i.e. where the line crosses the Y axis

The X and Y intercepts and the Slope are called the line properties. We shall now graph the line x-9y+3 = 0 and calculate its properties

Graph of a Straight Line :

Calculate the Y-Intercept :

Notice that when x = 0 the value of y is 1/3 so this line "cuts" the y axis at y= 0.33333

y-intercept = 3/9 = 1/3 = 0.33333

Calculate the X-Intercept :

When y = 0 the value of x is -3/1 Our line therefore "cuts" the x axis at x=-3.00000

x-intercept = -3/1 = -3.00000

Calculate the Slope :

Slope is defined as the change in y divided by the change in x. We note that for x=0, the value of y is 0.333 and for x=2.000, the value of y is 0.556. So, for a change of 2.000 in x (The change in x is sometimes referred to as "RUN") we get a change of 0.556 - 0.333 = 0.222 in y. (The change in y is sometimes referred to as "RISE" and the Slope is m = RISE / RUN)

Slope = 0.222/2.000 = 0.111

Geometric figure: Straight Line

Slope = 0.222/2.000 = 0.111

x-intercept = -3/1 = -3.00000

y-intercept = 3/9 = 1/3 = 0.33333

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plz mark me as brainliest if this helped :)

3 0

3 years ago

Determine the graph of the polar equation r=4/(1-1/2cosx(theta))

crimeas [40]

Answer:

see below

Step-by-step explanation:

We assume you want the graph of ...

$r=\dfrac{4}{1-\frac{1}{2}\cos{(\theta)}}$

A graphing calculator or spreadsheet is useful for this.

You know cos(θ) = cos(-θ), so the graph is symmetrical about the x-axis. You can evaluate the function at a few points to find the general outline.

r at 0° = 8

r at 30° ≈ 7.05

r at 45° ≈ 6.19

r at 60° ≈ 5.33

r at 90° = 4

r at 120° = 3.2

r at 135° ≈ 2.96

r at 150° ≈ 2.79

r at 180° ≈ 2.67

6 0

3 years ago