3 years ago

23−(−7) Please help me

Mathematics

1 answer:

adell [148]3 years ago

6 0

30 positive

When there is a subtraction sign with a negative number it becomes an addition sign

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Does the object below have a measurable volume? How do you know?

JulsSmile [24]

Answer: YES! cuz...

SOLID OBJECT The volume of any regularly shaped solid object is mea- sured in cubic units. The word cubic means that the object is not flat. The volume of an object is calculated by multi- plying three measurements: length, width, and height.

Step-by-step explanation:

3 0

2 years ago

Read 2 more answers

Solve using the quadratic formula:

timurjin [86]

Answer:

$\boxed{x_1 = \frac{7 + \sqrt{5} }{2} ~~or~~x_2 = \frac{7 - \sqrt{5} }{2} }$

Step-by-step explanation:

$x^2 - 7x + 11 = 0$

$x^2 - 7x = -11$

$(x - \frac{7}{2} )^2 - \frac{49}{4} = -11$

$(x - \frac{7}{2} )^2 = -11 + \frac{49}{4}$

$(x - \frac{7}{2} )^2 = \frac{5}{4}$

$x - \frac{7}{2} = \pm \sqrt{\frac{5}{4}}$

$x = \frac{7 \pm \sqrt{5} }{2}$

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3 years ago

This rectangle has 9 straight Lines and 14 squares.<br><br> Can you find them?

juin [17]

Answer:two dimensional shapes

Step-by-step explanation:

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3 years ago

Find the m, b, and write the equation for the following graph:

geniusboy [140]

Answer:

y=3

Step-by-step explanation:

m=0

b=3

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3 years ago

The price of an electronic puzzle was reduced be $7

Nimfa-mama [501]

Answer:

Step-by-step explanation:

total price was reduced by $ 7

let x = the total price........ x - 7

he bought 10.....and it cost him $ 130

10(x - 7) = 130

10x - 70 = 130

10x = 130 + 70

10x = 200

x = 200/10

x = 20 <====== original price

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3 years ago