All categories

3 years ago

2. Evaluate x(-y + z) for x = -1, y = 2, and z = 5. A 7 B 3 C-7 D-3

Mathematics

1 answer:

Andreas93 [3]3 years ago

5 0

-3; -1(-2+5) you do the parentheses first so it’s 3 then multiply -1 which equals -3

You might be interested in

If i buy a bigger bed do i have more bedroom or less bedroom

raketka [301]

Answer:

your have less bedroom to work with.

(or this is a trick question and the answer is you have the same amout of room no matter what you put in it)

Step-by-step explanation:

8 0

3 years ago

The world's tallest building is the Burj Khalifa in Dubai at 828 m tall. The CN Tower in Toronto is 553 m tall. Ryan wants to co

Taya2010 [7]

Answer:

Volume of Burj Khalifa Prism = 4000 $cm^2$

Volume of CN Tower Prism = 2671 $cm^2$

Step-by-step explanation:

Given

Height of Burj Khalifa = 828 m

Height of CN Tower in Toronto = 553 m

Base of rectangular prism is a square with sides 10 cm $\times$ 10 cm.

Height of Burj Khalifa prism = 40 cm

828 m is represented as 40 cm

$\Rightarrow 553 m$ is represented as $\frac{40}{828 } \times 553 = 26.71\ cm$

So, height of rectangular prism of CN Tower = 26.71 cm

Volume of a Prism is given by the Formula:

$V=Area\ of\ Base \times Height$

Base is a square, so Area of base = $Side^2$

Volume of Burj Khalifa Prism:

$V_B=10^2 \times 40 = 4000\ cm^2$

Volume of CN Tower Prism:

$V_C=10^2 \times 26.71 = 2671\ cm^2$

So, the answer is:

Volume of Burj Khalifa Prism = 4000 $cm^2$

Volume of CN Tower Prism = 2671 $cm^2$

4 0

3 years ago

One bag of pretzels costs $3 , $5 bags of pretzels costs $10

dalvyx [7]

If 5 bags of pretzels cost $10, then the pretzels are $2 per bag.

8 0

3 years ago

Solve the following equation for y: 2x-3y=6

Minchanka [31]

2x-3y=6

-y=6

y=-6

Check your Work

-6(2) - 3(-6)=

-12-(-18)=

-12+18=6

5 0

4 years ago

Let U be a universal set with subsets A and B such that n(U)=118, n(A)=57, n(B′)=69, and n(A∩B)=11. Find the following:

Arturiano [62]

$n(B)=n(U)-n(B')=118-69=49\\
n(A\cup B)=n(A)+n(B)-n(A\cap B)=57+49-11=95\\
n((A\cap B)')=n(U)-n(A\cap B)=118-11=107$

4 0

3 years ago