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3 years ago

Hayden evaluated this expression using the order of operations, but he made a mistake. Which step includes Hayden's mistake?

Mathematics

1 answer:

Tems11 [23]3 years ago

7 0

9514 1404 393

Answer:

step 3

Step-by-step explanation:

The multiplication indicated in step 2 should be carried out to get to step 3.

= -6 +56 +9 . . . correct step 3

Then, step 4 is ...

= 50 +9

and step 5 is ...

= 59

Hayden's mistake is in step 3 where he ignores the order of operations requirement to perform multiplication before addition.

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This is the question can someone help

agasfer [191]

Answer:

The coordinates of the vertices of triangle Q'R'S' will be:

Q'(-6, 9)

R'(-9, 3)

S'(-2, 2)

Step-by-step explanation:

Given the coordinates of the vertices QRS

The coordinates of the vertex Q is (-2, 3)

The coordinates of the vertex R is (-5, -3)

The coordinates of the vertex Q is (2, -4)

As we know the rules of translation that:

If you move horizontally 'c' units to the left, then 'c' units are subtracted to the x-coordinate of each of the vertices.

if you move 'c' units up, then 'c' units are added to the y-coordinate of each of the vertices.

Translation 6 units up and 4 units to the left.

(x, y) → (x - 4, y + 6)

As the triangle Q'R'S' is the image of the triangle QRS translated 6 units up and 4 units to the left.

So,

the coordinates of Q' will be:

(x, y) → (x - 4, y + 6) = (x, y) → (-2 - 4, 3 + 6) = (-6, 9)

the coordinates of R' will be:

(x, y) → (x - 4, y + 6) = (x, y) → (-5 - 4, -3 + 6) = (-9, 3)

the coordinates of S' will be:

(x, y) → (x - 4, y + 6) = (x, y) → (2 - 4, -4 + 6) = (-2, 2)

Therefore, the coordinates of the vertices of triangle Q'R'S' will be:

Q'(-6, 9)

R'(-9, 3)

S'(-2, 2)

6 0

3 years ago

HELP ME PLEASE!!!!!

Mariulka [41]

The volume in the same in both cynclinders would be my guess

3 0

3 years ago

Francine and Cheryl received equal scores on a test made up of multiple choice questions and an essay. Francine got 34 multiple

kipiarov [429]

$34x + 14 = 30x + 22$
X is the amount the multiple choice question is worth. Both girls had the same test score so both are equal. Isolate X and that will be the value.

$34x -( 30x) + 14 = 22$
$4x = 22 - (14)$
$4x = 8$
$4x \div 4 = 8 \div 4$
x = 2

Plug 2 back in for x in the original equation to check and both girls recieved a 82%

5 0

3 years ago

For brainiest:):):):):):):)

lora16 [44]

Answer:

0.625 and 62.5%
0.17 and 17%
3.7 and 367%
0.003 and 0.3%

3 0

3 years ago

Read 2 more answers

15. Before oil is added to a certain road surface material, the other ingredients are mixed. The mixture contains

mojhsa [17]

Answer:

sand = 3450 pounds

3/4 inch stones =6750 pounds

1 inch stones =4800 pounds.

Step-by-step explanation:

The mixture composition is :

45% three-quarter inch stones

32% inch stones and

sand for balance

The percent here is by mass of material used.

Weight of mixture is 15,000 pounds before oil addition.

Use the percent by weight for the two types of stones and calculate real values in pounds

Formula to apply is:

Mass percent = (mass of a material/ total mass of mixture) * 100

For 3/4 inch stones it will be:

$0.45= \frac{x}{15000} *100\\\\0.45=\frac{x}{150} \\0.45*150=x\\x=6750$

The 3/4 inch stones weigh 6750 pounds

The 1 inch stones will be

$32/100 * 15000 =4800$

The 1 inch stones weigh = 4800 pounds

Total for the two items : 4800+6750 =11550 pounds

The sand used weighs : 15000 - 11550 = 3450 pounds

8 0

4 years ago