All categories

3 years ago

Can someone help me with this math homework please!

Mathematics

1 answer:

Karolina [17]3 years ago

5 0

Answer:

A ; B ; D

Step-by-step explanation:

(3+1)/12 = 1/3 (ok)

(-5+1)/-2 = -4/-2 = 2 (ok)

(1+1)/-3 = -2/3 (no)

(15+1)/1 = 16 (ok)

(-2 + 1)/5 = -1/5 (no)

You might be interested in

A pound of ground beef costs $5. At this rate, what is the cost of: 3 pounds

Vsevolod [243]

Answer:

$15

Step-by-step explanation:

If one pound of beef costs 5 dollars then three would be 3 x 5 which is 15.

6 0

3 years ago

If two angles of a triangle sum to 100°, what is the measure of the 3rd angle?

Bumek [7]

Answer:

Step-by-step explanation:

7 0

3 years ago

Read 2 more answers

The average fish at a fishing tournament was 12.4 pounds. Some of the weight last of the fish are shown on the table:

Ivanshal [37]

Answer:

15.5kg

Step-by-step explanation:

12.4kg × 5 = 62kg,

= 62kg - (14.6kg + 11.4kg + 10.3kg + 10.2kg)

= 62kg - 46.5kg

= 15.5kg

6 0

3 years ago

Reil [10]

Answer:

x = 5.00 cm

Step-by-step explanation:

• area of the rectangle = $x$ x $(x + 1)$

= $x^2 + x$

• area of the circle = π r²

= $\frac{22}{7}$ x $(x + 2)^2$

= $\frac{22}{7}$ x $(x^2 + 4x + 4)$

∴ $x^2 + x$ + $\frac{22}{7}$ x $(x^2 + 4x + 4) = 184$

⇒ $x^2 + x$ + $\frac{22}{7} x^2 \space\ + \space\ \frac{88}{7} x \space\ + \space\ \frac{88}{7} = 184$

⇒ $\frac{29}{7}x^2 \space\ + \space\ \frac{95}{7}x \space\ - \frac{1200}{7} = 0$

• Using quadratic formula, where

a = $\frac{29}{7}$

b = $\frac{95}{7}$

c = $\frac{-1200}{7}$ ,

$x=\frac{-b \pm \sqrt{b^2-4c}}{2}$

$x = \frac{-\frac{95}{7}\pm \sqrt{(\frac{95}{7})^2 - 4(\frac{29}{7})(\frac{-1200}{7} ) } }{2(\frac{29}{7})}$

$x = 5.00 \space\ \space\ \space\ or \space\ \space\ \space\ x = -8.28$

As length (x) cannot be a negative number,

x = 5.00 cm

7 0

2 years ago

This needs to be answered for a number line -9=4x+3

Galina-37 [17]

Answer:

X=-3

Step-by-step explanation:

To find the unknown variable: X, we need to see how mich 4x equals to. to do this, we must first subtract 3 from both sides of the equation. The left side will be left with -12, and the right side will be left with 4x. This means:

-12=4x So...

x=-3

To check if this is right, you can subsitute this back into the equation.

4 times -3= -12. -12=3=-9

8 0

3 years ago