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3 years ago

How do I simply these in easy simple terms please I’m very tired

Mathematics

1 answer:

Aleonysh [2.5K]3 years ago

5 0

Answer:

combine like terms

Step-by-step explanation:

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A boat traveled 280 miles downstream and back. The trip downstream took 7 hours. The trip back took 14 hours. Find the speed of

Brrunno [24]

Let, the speed of boat = x
Speed of current = y
So, x + y = 280/7
x + y = 40 ---- first equation

x - y = 280/14
x - y = 20
x = 20 + y

Substitute this value of x in first equation,
20 + y + y = 40
2y = 40 - 20
y = 20/2
y = 10

Substitute this in first equation,
x + 10 = 40
x = 30

In short, Speed of Boat = 30 mph, & speed of current = 10 mph

Hope this helps!

5 0

3 years ago

Answer ASAP PLS

Ipatiy [6.2K]

The answer is 1, just use a calculator.

7 0

3 years ago

Find the values of a and b in the rhombus below.

loris [4]

Hello,

b = 26°
( 26° × 2 ) + 2a = 360°
52° + 2a = 360°
2a = 360° - 52° = 308°
a = 308° / 2 = 154°

5 0

3 years ago

Read 2 more answers

here is an inequality 2x + 5 > 50 explain the steps you would use to solve the equation for x what would the graph look like

Hatshy [7]

Answer:

$x>22.5$

Step-by-step explanation:

Given linear inequality:

$2x+5>50$

Solving for $x$

Subtracting both sides by 5.

$2x+5-5>50-5$

$2x>45$

Dividing both sides by 2.

$\frac{2x}{2}>\frac{45}{2}$

∴ $x>22.5$

The graph of the inequality is shown below.

The line is represented by dotted line because the inequality sign is only greater than which means 22.5 is not included in the solution.

3 0

3 years ago

Solve the following quadratic equation.<br><br> 3(x + 5)^2 = 60

RoseWind [281]

To solve this equation we could use:

$a^2-b^2=(a+b)(a-b)$

There will be:

$3(x + 5)^2 = 60\qquad|:3\\\\(x+5)^2=20\\\\(x+5)^2=\big(\sqrt{20}\big)^2\\\\ (x+5)^2=\big(\sqrt{4\cdot5}\big)^2\\\\(x+5)^2=\big(\sqrt{4}\cdot\sqrt{5}\big)^2\\\\(x+5)^2=\big(2\sqrt{5}\big)^2\\\\(x+5)^2-\big(2\sqrt{5}\big)^2=0\\\\ (x+5+2\sqrt{5})(x+5-2\sqrt{5})=0\\\\\\x+5+2\sqrt{5}=0\qquad\vee\qquad x+5-2\sqrt{5}=0\\\\\boxed{x=-5-2\sqrt{5}\qquad\vee\qquad x=-5+2\sqrt{5}}$

6 0

3 years ago

Read 2 more answers