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Zanzabum
3 years ago
12

What is 3-4+11+21-3? Best explained answer gets Brainliest!!!! Good luck :)

Mathematics
2 answers:
Citrus2011 [14]3 years ago
7 0

3-4=-1+11=10+21=31-3=28

Alika [10]3 years ago
6 0

Answer:

See below

Step-by-step explanation:

Let's take it part by part:

(3-4)+(11+21)-3

-1+(32)-3

-4+32

28

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Pls help idk what to do
Blababa [14]
22.
14-3x=26
solve: 14-3x =26
-14 -14
-3x. = 12
÷-3. ÷-3
x=-4
the answer for 22 is x=-4
5 0
3 years ago
3 (17) = 3 (20) - 3 (3)<br><br>please explaon why it is distributive property of multiplication
Gennadij [26K]
Because if there is a brackets with a number infront of them worhout any signs. then its distributive property of multiplication
4 0
3 years ago
A right triangle has side lengths of 4 unit's, 5 unit's and x units. It is unkown If the missing length is the longest or shorte
Kaylis [27]
If x is the hypotenuse then
hyp^2 = 4^2 + 5^2
hyp^2 = 41
hypotenuse = <span> <span> <span> 6.403124

</span></span></span>
if x is a leg then
leg^2 = 5^2 - 4^2
leg^2 = 25 - 16
leg^2 = 9
leg =3

8 0
3 years ago
A new cream was developed to reduce the irritation caused by poison ivy. To test the effectiveness, researchers placed an ad onl
andreyandreev [35.5K]

Answer:

B: Yes, the participants are grouped by sun exposure, and then both treatments are randomly assigned within each group.

Step-by-step explanation:

Randomized block design is one in which the experimental units are categorized into groups which we call blocks. Thereafter, treatments will be randomly allocated to the experimental units inside each of the blocks.

Now, from the question, we can see that they were grouped in Blocks according to their outdoor activity which is degree of exposure to the sun. Thereafter the individual groups are randomly assigned treatments.

Thus, Option B is correct.

7 0
2 years ago
Read 2 more answers
A certain company manufactures skateboards and rollerskates. It takes them 2 units of labor and 1 unit of materials to produce a
Alisiya [41]

Answer: The company should produce 7 skateboards and 16 rollerskates in order to maximize profit.

Step-by-step explanation: Let the skateboards be represented by s and the rollerskates be represented by r. The available amount of labour is 30 units, and to produce a skateboard requires 2 units of labor while to produce a rollerskate requires 1 unit. This can be expressed as follows;

2s + r = 30 ------(1)

Also there are 40 units of materials available, and to produce a skateboard requires 1 unit while a rollerskate requires 2 units. This too can be expressed as follows;

s + 2r = 40 ------(2)

With the pair of simultaneous equations we can now solve for both variables by using the substitution method as follows;

In equation (1), let r = 30 - 2s

Substitute for r into equation (2)

s + 2(30 - 2s) = 40

s + 60 - 4s = 40

Collect like terms,

s - 4s = 40 - 60

-3s = -20

Divide both sides of the equation by -3

s = 6.67

(Rounded up to the nearest whole number, s = 7)

Substitute for the value of s into equation (1)

2s + r = 30

2(7) + r = 30

14 + r = 30

Subtract 14 from both sides of the equation

r = 16

Therefore in order to maximize profit, the company should produce 7 skateboards and 16 rollerskates.

6 0
3 years ago
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