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andriy [413]
3 years ago
9

Samantha was scanning photos she was scanned 123 but still has 296 left to scan how many pictures did she star with define a var

iable and write an equation solve the equation algebraically and check the solution
Mathematics
2 answers:
Free_Kalibri [48]3 years ago
7 0
X=total photos
X-123=296
+123 +123
X=419
Inessa [10]3 years ago
7 0
<em><u>Let the total no.of photos be "X"
Given,
no.of photos scanned=123
no.of photos left=296
equation is</u> X-123=296
                  X=296+123
                  X=419
Therefore total no.of photos =419
<u>

Hope this helps u!!!!!!!!!!</u>


</em>
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Here is a triangular pyramid and its net.
galben [10]

Answer:

a) Area of the base of the pyramid = 15.6\ mm^{2}

b) Area of one lateral face = 24\ mm^{2}

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d) Total Surface Area = 87.6\ mm^{2}

Step-by-step explanation:

We are given the following dimensions of the triangular pyramid:

Side of triangular base = 6mm

Height of triangular base = 5.2mm

Base of lateral face (triangular) = 6mm

Height of lateral face (triangular) = 8mm

a) To find Area of base of pyramid:

We know that it is a triangular pyramid and the base is a equilateral triangle. \text{Area of triangle = } \dfrac{1}{2} \times \text{Base} \times \text{Height} ..... (1)\\

{\Rightarrow \text{Area of pyramid's base = }\dfrac{1}{2} \times 6 \times 5.2\\\Rightarrow 15.6\ mm^{2}

b) To find area of one lateral surface:

Base = 6mm

Height = 8mm

Using equation (1) to find the area:

\Rightarrow \dfrac{1}{2} \times 8 \times 6\\\Rightarrow 24\ mm^{2}

c) To find the lateral surface area:

We know that there are 3 lateral surfaces with equal height and equal base.

Hence, their areas will also be same. So,

\text{Lateral Surface Area = }3 \times \text{ Area of one lateral surface}\\\Rightarrow 3 \times 24 = 72 mm^{2}

d) To find total surface area:

Total Surface area of the given triangular pyramid will be equal to <em>Lateral Surface Area + Area of base</em>

\Rightarrow 72 + 15.6 \\\Rightarrow 87.6\  mm^{2}

Hence,

a) Area of the base of the pyramid = 15.6\ mm^{2}

b) Area of one lateral face = 24\ mm^{2}

c) Lateral Surface Area = 72\ mm^{2}

d) Total Surface Area = 87.6\ mm^{2}

8 0
2 years ago
Also the same as the other problem
irakobra [83]

Answer:

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Step-by-step explanation:

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Please mark it as brainliest if it helped

Answered by Gauthmath

5 0
2 years ago
Read 2 more answers
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