A class of 40 students visits a farm . they tour the farm in groups of 5 . how many groups of 5 can they make?

Lynn wants to multiply 44 × 305. She says that all she has to do is find 4×305 and then double that number.

Lubov Fominskaja [6]

Answer C is correct because 2×(4×305) is the same as (2×4)×305 and 2×4=8.

5 0

3 years ago

A rectangular metal plate is measured to be 7.6cm long and 3.1cm wide, both correct to one decimal place.

ElenaW [278]

Answer:

We know that the rectangular plate has measures of:

length = 7.6 ± 0.05 cm

width = 3.1 ± 0.05 cm

(the error is 0.05cm because we know that both measures are correct to one decimal place)

First, the upper bound of the length is equal to the measure of the length plus the error, this is:

L = 7.6 cm + 0.05 cm = 7.65 cm

The upper bound of the area is the area calculated when we use the upper bound of the length and the upper bound of the widht.

Remember that the area for a rectangle of length L and width W, is:

A = W*L

Then the upper bound of the area is:

A = (7.6cm + 0.05cm)*(3.1cm + 0.05cm) = 10.8 cm^2

5 0

3 years ago

Can someone please help me with all of these problems. They are a ton of them and they are due tomorrow. PLEASE AND THANK YOU

Masteriza [31]

15. $\frac{x}{5} - g = a$

Add "g" on both sides

$\frac{x}{5} = a +g$

Multiply 5 on both sides to get x by itself

x = 5(a + g)

x = 5a + 5g

18. a = 3n + 1

Subtract 1 on both sides

a - 1 = 3n

Divide 3 on both sides to get n by itself

$\frac{a - 1}{3} = \frac{a}{3} -\frac{1}{3}$ = n

21. M = T - R

Add "R" on both sides to get "T" by itself

M + R = T

24. 5p + 9c = p

Subtract "5p" on both sides

9c = p - 5p

9c = -4p

Divide 9 on both sides to get "c" by itself

c = $\frac{-4p}{9}$ or c = $\frac{-4}{9} p$

27. 4y + 3x = 5

Subtract "4y" on both sides

3x = 5 - 4y

Divide 3 on both sides to get "x" by itself

x = $\frac{5-4y}{3}$

x = $\frac{5}{3} -\frac{4y}{3}$

7 0

3 years ago

Please help me with these and please have explanations

NeTakaya

Answer:

1-B

2-C

3-D

Step-by-step explanation:

In the attached file

6 0

3 years ago

Find the circumference of the circle and show work

zaharov [31]

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$\large\blue\textsf{\textbf{\underline{\underline{Question:-}}}}$

Find the circumference of the circle and show work. [refer to

attachment]

$\large\blue\textsf{\textbf{\underline{\underline{Answer and How to Solve:-}}}}$

Formula for Circumference of a Circle:-

$\dashrightarrow\star\bigstar\boxed{\boxed{C=2\pi r}}}$

Where

C = circumference
π = pi (3.14…)
r = radius, which in this case is equal to 8

Substitute the value of r and solve:-

C=2π(8)

On simplification,

C=16π

On further simplification,

C=50.3

Therefore, we conclude that the circumference of this circle is

$\dashrightarrow\star\bigstar\boxed{\boxed{\underline{\bold{C=50.3\:yd}}}}\bigstar\star\dashleftarrow$

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7 0

2 years ago

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