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3 years ago

Please can someone solve thiss !!! T~T

Mathematics

2 answers:

Mademuasel [1]3 years ago

8 0

Answer:

y=2x

Step-by-step explanation:

morpeh [17]3 years ago

7 0

Answer:

y=2x

is the answer answer

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How do you simply the square root of 28

maria [59]

$\sqrt{28}$ can be rewritten as ;
= $\sqrt{7*4}$
= $\sqrt{4} * \sqrt{7}$
=2 $\sqrt{7}$

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3 years ago

Five times a number is 6 more than two times the number

34kurt

Answer:

5x= 2x+6

Step-by-step explanation:

5 times a number= 5x

2 times the number=2x

6 more= +6

7 0

3 years ago

Read 2 more answers

A drawing of a new car uses a scale of 4 inches = 5 feet. The drawing of the car is 10 inches long. How long is the car?

Naddika [18.5K]

Answer:

The car is 10 feet and 5 inches.

Step-by-step explanation:

First you must know how many times 4 goes into 10 because that's how long the picture is. 10 divided by 4 is 2.5. This means that 4 goes into 10 4.5 times meaning that there's a measure of 10 feet with a remaining 5 inches.

4 0

3 years ago

Work out the volume of the cone, giving your answer<br> to 3 significant figures.

Aliun [14]

Answer: 1010

Step-by-step explanation:

$V=\frac{1}{3}(\pi)(8^{2})(15) \approx \boxed{\text{ } 1010 \text{ cm}^{3}}$

6 0

2 years ago

Solve this equation using all three methods 4x^ = 9

Bumek [7]

Answer:

$x=-\frac{3}{2}, x=\frac{3}{2}$

Step-by-step explanation:

(1) To solve by factoring,

Given equation: $4 x^{2}=9$

Subtract 9 from both sides of the equation.

$\begin{aligned}&4 x^{2}-9=9-9\\&4 x^{2}-9=0\\&(2 x)^{2}-3^{2}=0\\&(2 x-3)(2 x+3)=0\end{aligned}$

Using zero factor principle, $2 x-3=0,2 x+3=0$

The solutions are $x=-\frac{3}{2}, x=\frac{3}{2}$ .

(2) To solve by complete the square ,

Given $4 x^{2}=9$

Divide both sides of the equation by 4.

$\frac{4 x^{2}}{4}=\frac{9}{4}$

$\Rightarrow x^{2}=\frac{9}{4}$

Square root on both sides.

$\Rightarrow x=\pm \frac{3}{2}$

$x=-\frac{3}{2}, x=\frac{3}{2}$

(3) To solve by quadratic formula,

$4 x^{2}-9=0$

Here, a = 4, b = 0, c = –9

Quadratic formula, $x=\frac{-b \pm \sqrt{b^{2}-4 a c}}{2 a}$

$x=\frac{-0 \pm \sqrt{0^{2}-4 \times 4 \times(-9)}}{2 \times 4}$

$\begin{aligned}&\Rightarrow x=\frac{\pm \sqrt{144}}{8}\\&\Rightarrow x=\pm \frac{3}{2}\\&\Rightarrow x=\frac{3}{2}, x=-\frac{3}{2}\end{aligned}$

3 0

3 years ago