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Likurg_2 [28]
3 years ago
5

The answer is 57 just need the steps 2-5*[3-{3^2+5}] 10pts.

Mathematics
1 answer:
lesya692 [45]3 years ago
7 0
<span>2−<span>5<span>(<span>3−<span>(<span><span>3^2</span>+5</span>)</span></span>)
do 3^2 </span></span></span><span>=<span>2−<span>5<span>(<span>3−<span>(<span>9+5</span>)</span></span>)
9+5</span></span></span></span><span>=<span>2−<span>5<span>(<span>3−14</span>)
3-14</span></span></span></span><span>=<span>2−<span><span>(5)</span><span>(<span>−11</span>)
multiply 5*11</span></span></span></span><span>=<span>2−<span>(<span>−55</span>)
negative cancels out then you do 2+55</span></span></span><span>=<span>57</span></span>
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Miss siegel’s class has 18 girls and 12 boys. What is the ratio of girls to boys?
alexgriva [62]

Answer:

3:2

Step-by-step explanation:

girls: boys

18    : 12

Divide each side by 6

18/6 :  12/6

3   : 2

4 0
3 years ago
Read 2 more answers
Tara has a large box of dog treats that weighs 6.0 pounds. She uses the large box of dog treats to make smaller bags, each conta
pogonyaev

Answer:

10 bags

Step-by-step explanation:

Calculation for How many smaller bags of dog treats can Tara make

First step is to multiply 6.0 pounds and 0.6 pound by 10 in order to make them a whole number

6.0*10=60

0.6*10=6

Now let calculate How many smaller bags of dog treats can Tara make

Smaller bags of dog treats =60/6

Smaller bags of dog treats=10

Therefore the numbers of smaller bags of dog treats that Tara can make is 10 bags

8 0
3 years ago
Pedro is building a playground in the shape of a right triangle. The base of the triangle is 18 yards. The height of the triangl
Bezzdna [24]

Answer:

567 square yards

Step-by-step explanation:

The Area for 1 Triangular playground = 1/2 × Base × Height

The base of the triangle is 18 yards. The height of the triangle is 21 yards.

Hence:

= 1/2 × 18 yards × 21 yards

= 189 square yards

The area of the Triangular 3 playground is given as:

= 3 × 189 square yards

= 567 square yards

6 0
3 years ago
Bacteria vary somewhat in size, but a diameter of 1.5 μ m is not unusual.
Dmitrij [34]

Answer:

a) 1.8 × 10^-12 cm³ or 1.8 × 10^-12 cubic meters

b) 7.1 × 10^-6 mm² or 7.1 × 10^-6 square millimeters

Step-by-step explanation:

a) We are assuming that the shape of the bacteria is a sphere.

Hence, Volume of the Sphere(Bacteria) = 4/3 × π × r³

Diameter = 1.5 μm

Radius = Diameter/2 = 1.5μm/2

= 0.75μm

We are told that the volume should be in cubic centimeters

Converting 0.75μm to centimeters

1 μm = 1 × 10^-4 cm

0.75 μm =

Cross Multiply

= 0.75 μm × 1 × 10^-4 cm/ 1 μm

= 0.000075cm

Volume of the Sphere(Bacteria) = 4/3 × π × r³

= 4/3 × π × (0.000075)³

= 1.767145867 × 10^-12 cm³

Approximately as 2 significant figures = 1.8 × 10^-12 cm³

b) The formula for the Surface area of a Sphere = 4πr²

Diameter = 1.5 μm

Radius = Diameter/2 = 1.5μm/2

= 0.75μm

We are told that the surface area should be in square millimeters

Converting 0.75μm to millimeters

1 μm = 0.001 mm

0.75 μm =

Cross Multiply

= 0.75 μm ×0.001mm/ 1 μm

= 0.00075mm

Surface Area of a Sphere

= 4 × π × r²

= 4 × π × 0.00075²

= 7.06858 ×10^-6 mm²

Approximately to 2 significant figures

= 7.1 × 10^-6 mm²

6 0
3 years ago
PLS HELP ME ASAP FOR 1, 2, 3, and 4 (SHOW WORK!!) + LOTS OF POINTS!!
Lera25 [3.4K]
1/2in = 16 mi
2 3/4 in without whole numbers [(denominator ×whole) + numerator] / denominator
4×2 = 8 +3 = 11/4
Find common denominator for 1/2 and 11/4 (common D Is 4)
Multiply 1/2 by 2/2
2/4 in = 16 mi divide this by 2
2/4 ×1/2 = 1/4
16 /2 = 8
1/4 = 8
1/4 goes into 11/4 11 times
Multiply 8 times 11
88 miles (D)

End zone to end zone is = length so his scale is 6 in and in real life it is 360 ft
To find scale divide 360 by 6
1in = 60 ft (B)

160 ft wide
(divide 160 by 60 ft ) fraction
160/60 is a fraction now simplify
16/6
Common factors of both numbers is 2
Simplify by 2
8/3
Make into whole number fraction
3 goes into 8 two times (2×3=6)(2 becomes whole number) while there's is 2 left over( 8 -6=2) (becoming the numerator)
2 2/3 in (B)

120 ft long
80 ft wide

24 in is scale of "long"
Divide 120 by 24
120÷24=5
So 5in in scale equals 1ft in real life
To find width in scale divide 80 by 5
80/5= 16in (A)

If you have any trouble understanding feel free to let me know I will try to explain as best as I can :)
5 0
3 years ago
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