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2 years ago

has 10 marbles than Emma Emma has M number of marbles write a variable expressions for the number of marbles that Dave has

Mathematics

2 answers:

Naya [18.7K]2 years ago

8 0

Answer: m + 10 = d

Step-by-step explanation: I’m assuming that Dave has 10 more marbles than Emma.

leva [86]2 years ago

3 0

YOUR MUM YOU C. U N T

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WILL MARK BRAINIEST! 25 points!!! What is the x-coordinate of the solution to the following system of equations? 2x + y = −4 5x

vladimir2022 [97]

Answer:

x=-6

Step-by-step explanation:

2x+y=-4

5x+3y=-6

solve :

multiply first equation by 3

6x+3y=-12

5x+3y=-6

subtract the two equations : 6x+3y-5x-3y=-12-(-6)

x=-12+6

x=-6

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3 years ago

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Two circles of radius 8 are tangent to the graph of

KengaRu [80]

Two circles of radius 4 are tangent to the graph of y^2 = 4x at the point (1, 2). ... I know how to find the tangent line from a circle and a given point, but ... 2a2=42. a2=8. a=±2√2. Then1−xc=±2√2 and 2−yc=±2√2. ... 4 from (1,2), so you could find these centers, and from there theequations of the circle

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2 years ago

What is the lowest number 588 can be multiplied by so that the result is a squared number?

Keith_Richards [23]

The lowest number is 3.

3 x 588 = 1,764

1,764 = (42) squared

I don't know an easy way to do it. I just slogged through it one-by-one ...
I tried 2 , then I tried 3 and I didn't have to go any farther.
You could have done the same thing. The difference between us is that
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3 years ago

Solve The Equation 4x×9y=7 4x-9y=9

hoa [83]

Answer:

$\large\boxed{x=\dfrac{9}{8}-\dfrac{\sqrt{109}}{8},\ y=-\dfrac{1}{2}-\dfrac{\sqrt{109}}{18}}\\or\\\boxed{x=\dfrac{9}{8}+\dfrac{\sqrt{109}}{2},\ y=-\dfrac{1}{2}+\dfrac{\sqrt{109}}{18}}$

Step-by-step explanation:

$\left\{\begin{array}{ccc}4x\times9y=7&(1)\\4x-9y=9&(2)\end{array}\right\\\\(2)\\4x-9y=9\qquad\text{subtract}\ 4x\ \text{from both sides}\\-9y=-4x+9\qquad\text{change the signs}\\9y=4x-9\qquad\text{substitute it to (1)}\\\\4x(4x-9)=7\qquad\text{use the distributive property}\ a(b+c)=ab+ac\\(4x)(4x)+(4x)(-9)=7\\(4x)^2-36x=7\\(4x)^2-2(4x)(4.5)=7\qquad\text{add}\ 4.5^2\ \text{to both sides}\\(4x)^2-2(4x)(4.5)+4.5^2=7+4.5^2\qquad\text{use}\ (a-b)^2=a^2-2ab+b^2$

$(4x-4.5)^2=7+20.25\\(4x-4.5)=27.25\to 4x-4.5=\pm\sqrt{27.25}\\\\4x-\dfrac{45}{10}=\pm\sqrt{\dfrac{2725}{100}}\\\\4x-\dfrac{45}{10}=\pm\dfrac{\sqrt{2725}}{\sqrt{100}}\\\\4x-\dfrac{45}{10}=\pm\dfrac{\sqrt{25\cdot109}}{10}\\\\4x-\dfrac{45}{10}=\pm\dfrac{\sqrt{25}\cdot\sqrt{109}}{10}\\\\4x-\dfrac{45}{10}=\pm\dfrac{5\sqrt{109}}{10}\qquad\text{add}\ \dfrac{45}{10}\ \text{to both sides}\\\\4x=\dfrac{45}{10}\pm\dfrac{5\sqrt{109}}{10}$

$4x=\dfrac{9}{2}\pm\dfrac{\sqrt{109}}{2}\qquad\text{divide both sides by 4}\\\\x=\dfrac{9}{8}\pm\dfrac{\sqrt{109}}{8}\\\\\text{Put the values of}\ x\ \text{to (2):}\\\\9y=4\left(\dfrac{9}{8}\pm\dfrac{\sqrt{109}}{8}\right)-9\\\\9y=\dfrac{9}{2}\pm\dfrac{\sqrt{109}}{2}-\dfrac{18}{2}\\\\9y=-\dfrac{9}{2}\pm\dfrac{\sqrt{109}}{2}\qquad\text{divide both sides by 9}\\\\y=-\dfrac{1}{2}\pm\dfrac{\sqrt{109}}{18}$

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2 years ago

What is 250% turned in to a fraction or mixednumber

mixas84 [53]

It would be 250/1000 or 1/4

please can i have a brainliest

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2 years ago

Read 2 more answers

has 10 marbles than Emma Emma has M number of marbles write a variable expressions for the number of marbles that Dave has​

has 10 marbles than Emma Emma has M number of marbles write a variable expressions for the number of marbles that Dave has