3 years ago

Will mark brainliest for whoever answers correctly

Mathematics

1 answer:

Alex17521 [72]3 years ago

3 0

Answer:

umm

Step-by-step explanation:

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For number 17. What’s A and B?

goldenfox [79]

Answer:

The shape is a square. Perimeter is 28 and the area is 49

Step-by-step explanation:

Distance between each point is 7. 7x7(for area) is 49 and 7x4(for perimeter) is 28.

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4 years ago

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Find the value of 3a-4b if a=-2 and b=1

iVinArrow [24]

Hey there!
Let's plug in our values:
3(-2) - 4(1) =
-6-4 =
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Hope this helps!

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3 years ago

Which of the honey jars is the best value for money? Please help ten points :)

KatRina [158]

Answer:

The large jar is best value for money.

Step-by-step explanation:

For large jar you get 540/4.10 = 131.7g of honey per penny.

For small jar you get 360/2.81 = 128.1g of honey per penny

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4 years ago

Use the area models to solve these equations.<br> 15 x 11 =<br>

Vlad [161]

The answer is 1500 of the equations

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3 years ago

Solve x2 – 8x + 41 = 0 for x.

BARSIC [14]

The equation $x^2-8x+41=0$ is quadratic equation that requires finding discriminant

$D=b^2-4ac=(-8)^2-4\cdot 41=64-164=-100.$

Since discriminant is negative, this equation has two complex roots. Note that $-1=i^2,$ where $i$ is imaginary unit. Then $D=-100=100\cdot (-1)=100\cdot i^2,\\ \\\sqrt{D}=10i.$

Now the complex roots are

$x_1=\dfrac{8+10i}{2}=4+5i,\\ \\x_2=\dfrac{8-10i}{2}=4-5i.$

Answer: correct choice is D.

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4 years ago

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