There are three petri dishes in a laboratory. The first one contains 22,340 cells, the second contains 43,560 cells, and the last dish contains 36,612 cells. Approximately how many cells are there in total?(1 point)
Responses
10,000
10,000
1,000,000
1,000,000
150,000
150,000
100,000
100,000
To find the total number of cells, we add the number of cells in each petri dish together:
22,340 cells in the first dish
+ 43,560 cells in the second dish
+ 36,612 cells in the last dish
----------------------
= 102,512 cells in total
The closest approximate number from the given options is:
100,000 cells
So the correct response is:
100,000
First, let's find the total number of tacos sold:
11,321 carne asada tacos
+ 13,132 chicken tacos
+ 8,982 carnitas tacos
--------------------------------
= 33,435 total tacos sold
Next, we'll calculate the approximate earnings by multiplying the total number of tacos by the price per taco:
33,435 tacos * $3.89 per taco ≈ $130,062.15
The closest approximate value to the actual total earnings from the given options is:
$130,000
Therefore, the best estimate for their total earnings from tacos is:
$130,000
First, we need to isolate x on one side of the equation. To do this, we'll subtract 1,998 from both sides:
21x + 1,998 = 2,243
21x = 2,243 - 1,998
21x = 245
Now, we divide both sides by 21 to solve for x:
x = 245 / 21
x ≈ 11.67
When we look at the given options, the closest estimate to the actual value of x is:
10
Therefore, the best estimate for x from the given choices is:
10
Which of the following answers gives the best estimate for x given the following equation?
x50−94=189
(1 point)
Responses
150
150
1,500
1,500
15,000
15,000
150,000
A local taqueria sold 11,321 carne asada tacos, 13,132 chicken tacos, and 8,982 carnitas tacos last year. If each taco was sold for $3.89, which value best estimates their total earnings from tacos?(1 point)
Responses
$90,000
$90,000
$160,000
$160,000
$33,000
$33,000
$130,000
Which of the following answers gives the best estimate for x given the following equation?
21x+1,998=2,243
(1 point)
Responses
1,000
1,000
100
100
10
10
1
Let's first solve the equation for x:
\( x \cdot 50 - 94 = 189 \)
Add 94 to both sides to isolate the term with x:
\( x \cdot 50 = 189 + 94 \)
\( x \cdot 50 = 283 \)
Now divide by 50 to find x:
\( x = \frac{283}{50} \)
\( x = 5.66 \)
Since 5.66 is not directly an option, we need to remember that we are looking for the best estimate for x. Given that multiplying 5.66 by 50 gave us 283, we can estimate that x is approximately:
150 (because 5.66 is reasonably close to 3, and 3 times 50 is 150).
So the correct response from the given options is:
150